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17 tháng 8 2018

(1) put                                                                (5) warm

(2) heat                                                              (6) add

(3) empty                                                           (7) allow

(4) take                                                               (8) use

17 tháng 1 2021

Complete the instruction on how to make a nice cup of tea, using the verbs in the box.

Put. add. use. warm. empty. allow. heat. take

First(1)...put....water in a kettle. Then(2)......heat......the teapot for a while and(3)..empty.... the hot water.(4)..Take......two spoonfuls of tea in the teapot. Next(5)...warm.....the teapot to the kettle and(6)...add......boiling water to the teapot.(7)...Allow......the tea to brew for 3 minutes. Finally,add some lemon juice and sugar and(8)...use.......it with some biscuits.

17 tháng 1 2021

1-put

2-heat

3-empty

4-take

5-warm

6- add

7-allow

8-use   ☺

Fill in each blank with the correct present or future passive verb from the verbs given in the box. plant , publish , cause , use , show , sweep , speak , make , cover , destroy 1.) Many accidents_____________ by dangerous driving. 2.) Millions of trees_____________ by forest fires every year. 3.) Films____________ in the cinema. 4.) How many languages______________ in Canada? 5.) His best novels_____________ next year. 6.) Most of the earth's surface_____________________by water. 7.)...
Đọc tiếp

Fill in each blank with the correct present or future passive verb from the verbs given in the box.

plant , publish , cause , use , show , sweep , speak , make , cover , destroy

1.) Many accidents_____________ by dangerous driving.

2.) Millions of trees_____________ by forest fires every year.

3.) Films____________ in the cinema.

4.) How many languages______________ in Canada?

5.) His best novels_____________ next year.

6.) Most of the earth's surface_____________________by water.

7.) Young trees_____________in the school garden by the eighth-form students every summer.

8.) Glass____________ from sand.

9.) The classrooms___________________carefully by the students every day.

10.) This laboratory________________for doing experiments very often.

Complete these sentences with the correct adjectives from the box.

lucky , shocked , anxious , careful , welcome , difficult , impossible , willing

1.) You are______________to use my bicycle at any time.

2.) The children are____________to go to the circus.

3.) It's obviously_____________to predict the future accurately.

4.) You're very ___________________ to be alive after that accident.

5.) It's_________________ to climb that high mountain.

6.) Be______________not to walk on the wet sidewalks.

7.) Are you ______________ to accept responsibility?

8.) He was ________________to hear his son swearing.

Complete the instruction on how to make a nice cup of tea , using the verbs in the box.

put , add , use , warm , empty , allow , heat , take

First, (1)_____________water in a kettle. Then, (2)_______________the teapot for a while and (3)___________the hot water. (4)______________two spoonfuls of tea in the teapot. Next, (5)_____________the teapot to the kettle and (6)_____________boiling water to the teapot. (7)_____________the tea to brew for about 3 minutes. Finally, add some lemon juice and sugar and (8)______________ it with some biscuits.

Complete the dialogue with the expressions in the box.

you save fifteen to twenty percent of the water.

you put the bottle in the bathroom.

fill it with water.

it saves water.

What for?

you can reuse it.

Miss Hang: Oh, don't throw away that plastis bottle. (1)_______________.

Lan : An old plastic bottle? (2)______________.

Miss Hang : To save water , you put some small stones in the bottle and (3)_____________.The stones and water make the bottle heavy. (4)________________, oh in the toilet tank.

Lan : You put it in the toilet tank?

Miss Hang : Yeah, (5)_______________every time you flush the tank. (6)___________________.

Lan : It saves that much water? Wow!

Rearrange these sentences in the correct order to have meaningful instructions.

A. How to recycle glass.

1.) Then wash the glass with a detergent liquid.

2.) Dry the glass pieces completely.

3.) Melt the mixture unitl it becomes a liquid.

4.) Break the glass into small pieces.

5.) Use a long pipe, put it into the liquid, then blow the liquid into intended shapes.

6.) Mix them with certain specific chemicals.

Your answer :___________________________________________________________

B. How to recycle paper.

1.) Put the mashed paper into another bucket and add an equal volume of water . Mix the paper and the water together.

2.) Use a wooden spoon to mash the paper . Plece some wire net in the mixture and liftit out.

3.) Wait about 5 minutes. Take the net off the cloth.

4.) soak old paper in a bucket of water overnight.

5.) Wrap some heavy books in plastic bag and place them on the cloth. Take the books out of the cloth and take the paper out to dry in the sunlight.

6.) Put the net on the cloth . Press the net down on the cloth.

Your answer :_________________________________________________________

2
18 tháng 3 2018

Fill in each blank with the correct present or future passive verb from the verbs given in the box.

plant , publish , cause , use , show , sweep , speak , make , cover , destroy

1.) Many accidents_____are caused________ by dangerous driving.

2.) Millions of trees____are burned______ by forest fires every year.

3.) Films______are showed______ in the cinema.

4.) How many languages______are spoken________ in Canada?

5.) His best novels______will be published_______ next year.

6.) Most of the earth's surface____is covered_____by water.

7.) Young trees__are grown____in the school garden by the eighth-form students every summer.

8.) Glass_______is produced___ from sand.

9.) The classrooms__are cleaned__carefully by the students every day.

10.) This laboratory__is cleaned___for doing experiments very often.

Complete these sentences with the correct adjectives from the box.

lucky , shocked , anxious , careful , welcome , difficult , impossible , willing

1.) You are_____welcome ______to use my bicycle at any time.

2.) The children are___anxious _________to go to the circus.

3.) It's obviously_____difficult _____to predict the future accurately.

4.) You're very ________lucky _____ to be alive after that accident.

5.) It's_______impossible ______ to climb that high mountain.

6.) Be_______careful _______not to walk on the wet sidewalks.

7.) Are you ____willing __________ to accept responsibility?

8.) He was _______shocked_________to hear his son swearing.

18 tháng 3 2018

Luyện tập tổng hợp

IV/Write the instructions to make lemon iced tea(tra chanh),using the words or pharses given,and words showing sequence(first,second,next,then,after that,finally) Ingredients:     _tea bags(You can use any kind of tea you love:lotus tea,Lipton tea,or dried tea leaves).     _lemon,sugar,ice.Process: 1.put/tea bag/small cup/then/pour/slowly/boiled water/it.__________________________________________________________________ 2.wait/5-7 minutes/then get/tea...
Đọc tiếp

IV/Write the instructions to make lemon iced tea(tra chanh),using the words or pharses given,and words showing sequence(first,second,next,then,after that,finally)

 Ingredients:

     _tea bags(You can use any kind of tea you love:lotus tea,Lipton tea,or dried tea leaves).

     _lemon,sugar,ice.

Process:

 1.put/tea bag/small cup/then/pour/slowly/boiled water/it.

__________________________________________________________________

 2.wait/5-7 minutes/then get/tea bag/out.

__________________________________________________________________

 3.cut/lemon/half/then/press/water/from it/not/use/seeds.

__________________________________________________________________

 4.add/sugar/and/stir/mixture/then/add/ice.

__________________________________________________________________

5/your drink/already/served/pour/it/glasses.

__________________________________________________________________

6/decorate/sliced lemon/basil leaves/surface of drink.

__________________________________________________________________

0
Rearrange these sentences in the correct order to have meaningful instructions. A. How to recycle glass. 1.) Then wash the glass with a detergent liquid. 2.) Dry the glass pieces completely. 3.) Melt the mixture unitl it becomes a liquid. 4.) Break the glass into small pieces. 5.) Use a long pipe, put it into the liquid, then blow the liquid into intended shapes. 6.) Mix them with certain specific chemicals. B. How to recycle paper. 1.) Put the mashed paper into another bucket and add...
Đọc tiếp

Rearrange these sentences in the correct order to have meaningful instructions.

A. How to recycle glass.

1.) Then wash the glass with a detergent liquid.

2.) Dry the glass pieces completely.

3.) Melt the mixture unitl it becomes a liquid.

4.) Break the glass into small pieces.

5.) Use a long pipe, put it into the liquid, then blow the liquid into intended shapes.

6.) Mix them with certain specific chemicals.

B. How to recycle paper.

1.) Put the mashed paper into another bucket and add an equal volume of water . Mix the paper and the water together.

2.) Use a wooden spoon to mash the paper . Plece some wire net in the mixture and liftit out.

3.) Wait about 5 minutes. Take the net off the cloth

4.) soak old paper in a bucket of water overnight.

5.) Wrap some heavy books in plastic bag and place them on the cloth. Take the books out of the cloth and take the paper out to dry in the sunlight.

6.) Put the net on the cloth . Press the net down on the cloth.

2
28 tháng 8 2018

Rearrange these sentences in the correct order to have meaningful instructions.

A. How to recycle glass.

1.) Then wash the glass with a detergent liquid.

2.) Dry the glass pieces completely.

3.) Melt the mixture unitl it becomes a liquid.

4.) Break the glass into small pieces.

5.) Use a long pipe, put it into the liquid, then blow the liquid into intended shapes.

6.) Mix them with certain specific chemicals.

4-1-2-3-6-5

B. How to recycle paper.

1.) Put the mashed paper into another bucket and add an equal volume of water . Mix the paper and the water together.

2.) Use a wooden spoon to mash the paper . Plece some wire net in the mixture and liftit out.

3.) Wait about 5 minutes. Take the net off the cloth

4.) soak old paper in a bucket of water overnight.

5.) Wrap some heavy books in plastic bag and place them on the cloth. Take the books out of the cloth and take the paper out to dry in the sunlight.

6.) Put the net on the cloth . Press the net down on the cloth.

4-2-1-3-5-6

7 tháng 3 2020

Rearrange these sentences in the correct order to have meaningful instructions.

A. How to recycle glass.

1.) Then wash the glass with a detergent liquid.

2.) Dry the glass pieces completely.

3.) Melt the mixture unitl it becomes a liquid.

4.) Break the glass into small pieces.

5.) Use a long pipe, put it into the liquid, then blow the liquid into intended shapes.

6.) Mix them with certain specific chemicals.

4-1-2-3-6-5

B. How to recycle paper.

1.) Put the mashed paper into another bucket and add an equal volume of water . Mix the paper and the water together.

2.) Use a wooden spoon to mash the paper . Plece some wire net in the mixture and liftit out.

3.) Wait about 5 minutes. Take the net off the cloth

4.) soak old paper in a bucket of water overnight.

5.) Wrap some heavy books in plastic bag and place them on the cloth. Take the books out of the cloth and take the paper out to dry in the sunlight.

6.) Put the net on the cloth . Press the net down on the

12 tháng 3 2017

Điển 1 từ vào ô trống:

Many thousands of chidren have accidents in their homes. As a (1)....result...., some died. The (2)...most... common accidents are with fire and hot water. Small chidren often touch pots of boiling water on the stove. The pots fall over and the hot water falls on the chidren and burns (3)..them... Some chidren like to play with (4)..fire... They enjoy striking mayches or throwing on a fire to (5)..mạke.. it burn brightly. If a fire gets to big, it gets out of (6).control.. Then the house catches fire. It is very dangerous to play with matches. When a child strikes a match, the flame soon burns near his fingers. Then he drops the match on the floor. Many houses(7)..catch... fire in this way.

Some kinds of clothing burns very easily. Many children have (8)..been... burned because they have stood too near a fire and their clothing has suddenly caught fire.

12 tháng 3 2017

Điển 1 từ vào ô trống:

Many thousands of chidren have accidents in their homes. As a (1)....result...., some died. The (2)...most... common accidents are with fire and hot water. Small chidren often touch pots of boiling water on the stove. The pots fall over and the hot water falls on the chidren and burns (3)..them... Some chidren like to play with (4)..fire... They enjoy striking mayches or throwing on a fire to (5)..mạke.. it burn brightly. If a fire gets to big, it gets out of (6).control.. Then the house catches fire. It is very dangerous to play with matches. When a child strikes a match, the flame soon burns near his fingers. Then he drops the match on the floor. Many houses(7)..catch... fire in this way.

Some kinds of clothing burns very easily. Many children have (8)..... burned because they have stood too near a fire and their clothing has suddenly caught fire.

VI. Put the sentences below in the correct order to produce the instruction to make " Jade Palace Fried Rice". Use the sequence markers : first, second, next, then, after that, finally to complete the instruction. ____ Enjoy your fried rice! ____ Pour in a little soy sauce and stir again. ____ Fry the chopped vegetables in the work or big frying pan. __1_ Put the rice in a pot with two cups of water. Boil until the water is gone. ____ Add the egg and mix well. ____ Wash and chop the...
Đọc tiếp

VI. Put the sentences below in the correct order to produce the instruction to make " Jade Palace Fried Rice". Use the sequence markers : first, second, next, then, after that, finally to complete the instruction.

____ Enjoy your fried rice!

____ Pour in a little soy sauce and stir again.

____ Fry the chopped vegetables in the work or big frying pan.

__1_ Put the rice in a pot with two cups of water. Boil until the water is gone.

____ Add the egg and mix well.

____ Wash and chop the cabbage, carrot, green onions, and bean sprouts.

____ Add the rice and stir. Fry together a few minutes.

JADE PALACE FRIED RICE

a cup of rice one carrot two cups of water a few green onions

some cabbage some bean sprouts a little soy sauce one egg

____________________________________________________________________________

____________________________________________________________________________

____________________________________________________________________________

____________________________________________________________________________

____________________________________________________________________________

____________________________________________________________________________

Giúp mình bài tập này với.

2
30 tháng 12 2016

Put the sentences below in the correct order to produce the instruction to make " Jade Palace Fried Rice". Use the sequence markers : first, second, next, then, after that, finally to complete the instruction.

_7__ Enjoy your fried rice!

__6_ Pour in a little soy sauce and stir again.

__3_ Fry the chopped vegetables in the work or big frying pan.

__1_ Put the rice in a pot with two cups of water. Boil until the water is gone.

__5_ Add the egg and mix well.

__2_ Wash and chop the cabbage, carrot, green onions, and bean sprouts.

__4_ Add the rice and stir. Fry together a few minutes.

9 tháng 1 2017

7

6

3

5

2

4

MICROWAVING Microwaving is a method of cooking where food is bombarded by microwaves, usually within an appliance called a microwave oven which excite the water, fat and sugar molecules, thereby heating (cooking) both the outside and center of the food at the same time. (1)………………… (A common myth is that a microwave oven cooks from the center of the food outward. This appears to happen because heat generated at the surface escapes more readily from the surface of the food into the surrounding...
Đọc tiếp

MICROWAVING
Microwaving is a method of cooking where food is bombarded by microwaves, usually
within an appliance called a microwave oven which excite the water, fat and sugar
molecules, thereby heating (cooking) both the outside and center of the food at the same
time. (1)…………………
(A common myth is that a microwave oven cooks from the center of the food outward. This
appears to happen because heat generated at the surface escapes more readily from the
surface of the food into the surrounding air.) One advantage of microwaving is that small
amounts of food can be heated very quickly, making it useful for reheating leftovers.
The disadvantage is that food which is microwaved does not undergo some of the chemical
reactions, such as browning, which makes the food visually attractive. Primitive microwave
ovens often do not cook evenly, leading to a concern that bacteria easily killed by more
traditional cooking methods may survive the quick cooking time in "cold spots", though the
food item as a whole is cooked to a safe average temperature. (2) ……
Some high-end microwave ovens are combined with a convection oven which basically
cook the food using microwave and hot air simultaneously to achieve both the fast cooking
time and browning effect.
(3) …………………
However microwave ovens are used in some fast food chains and special microwave bags
are available for cooking fowl or large joints of meat.
Professional chefs generally recommend using microwaves for a limited set of tasks,
including: melting fats (such as butter) and chocolate, cooking grains like oatmeal and grits,
cooking rice, thawing frozen meats and vegetables before cooking by other methods and
quickly reheating already-cooked foods.
Using a microwave to boil water is potentially dangerous, due to superheating. In a
microwave, water can be raised quickly to a temperature above the boiling point before
major bubbles form, especially if it is purified and in a very clean glass vessel. (4)
…………………
This effect is rare, even for scientists who try to deliberately recreate it, and any seed
whatsoever for boiling is likely to prevent the problem. Boiling water with, for instance, a
teabag already in it will prevent any dangers by providing a seed, as will using a mug that is
not perfectly clean.

The risk greatly increases when water has already been boiled once in the same container.
This situation can occur if the user of the oven boiled the water once, forgot about it, then
came back later to boil it again. The first time the water boils, the seed bubbles
(microscopic bubbles of air around which larger steam bubbles grow) are used up and
largely eliminated from the water as it cools down. When the water is heated again, the lack
of seed bubbles causes superheating, and a risk of a steam explosion when the water's
surface is disturbed.
Placing something in the water before heating can mostly alleviate this risk. If you are
planning to mix something with the water, say tea or hot chocolate, adding it before heating
will insure that the water boils. Otherwise, placing a wood object, for instance a chopstick,
in the water before heating will also work.
Care should be taken when removing heated water from a microwave. Make sure that the
hands are protected from possible liquid boil-over, place the container on a level, heat-
proof surface and stir liquid with a warm spoon. Also, never add powdered substances
(such as instant coffee or cocoa mix) to the container taken from the microwave, due to the
addition of all those seed bubbles and the potential for violent, spontaneous boiling. (5)
…………………
Metal objects, such as metal utensils, in a microwave oven can lead to dangerous situations.
Metals do not absorb microwaves effectively. Instead, metals reflect microwaves, thereby
preventing the latter from reaching the food. (6) …………………
Thin metal layers, such as metal foil and mugs with metal trim can melt or burn due to the
strong electrical currents that are generated in metal objects. However, small solid metal
objects, such as spoons, in combination with a large amount of absorbing food or liquid,
normally do not lead to problems.
This article is licensed under the GNU Free Documentation License. It uses material from the
Original Wikipedia article.

0
IV. In the following text, six sentences or parts of sentences have been removed. Above the extract you will find the six removed sentences PLUS one sentence which doesn't fit. Choose from the sentences (A-G) the one which fits each gap (1-6). Remember, there is one extra sentence you do not need to use. Write the correct letter in the box. Choose from the following sentences to fill the spaces in the text. There is ONE extra. A. Using a microwave for cooking a large food mass is difficult...
Đọc tiếp

IV. In the following text, six sentences or parts of sentences have been removed. Above
the extract you will find the six removed sentences PLUS one sentence which doesn't fit.
Choose from the sentences (A-G) the one which fits each gap (1-6). Remember, there is
one extra sentence you do not need to use. Write the correct letter in the box.
Choose from the following sentences to fill the spaces in the text. There is ONE extra.
A. Using a microwave for cooking a large food mass is difficult due to limited penetration of
microwaves.
B. This can be overcome by leaving the food to stand for a few minutes when cooking is
completed.

C. It is advised that the water should be poured slowly into another container that already
contains the powder.
D. In this way, buying a microwave oven with a turntable ensure the food is cooked
throughout.
E. Conversely the microwaves do not heat glass, ceramic and plastic containers.
F. If the microwaves are not absorbed inside the oven, the oven can be damaged by
electrical arcs and overheating of the microwave source.
G. When water in that state is disturbed, it can suddenly and unexpectedly boil violently.
MICROWAVING
Microwaving is a method of cooking where food is bombarded by microwaves, usually
within an appliance called a microwave oven which excite the water, fat and sugar
molecules, thereby heating (cooking) both the outside and center of the food at the same
time. (1)…………………
(A common myth is that a microwave oven cooks from the center of the food outward. This
appears to happen because heat generated at the surface escapes more readily from the
surface of the food into the surrounding air.) One advantage of microwaving is that small
amounts of food can be heated very quickly, making it useful for reheating leftovers.
The disadvantage is that food which is microwaved does not undergo some of the chemical
reactions, such as browning, which makes the food visually attractive. Primitive microwave
ovens often do not cook evenly, leading to a concern that bacteria easily killed by more
traditional cooking methods may survive the quick cooking time in "cold spots", though the
food item as a whole is cooked to a safe average temperature. (2) ……
Some high-end microwave ovens are combined with a convection oven which basically
cook the food using microwave and hot air simultaneously to achieve both the fast cooking
time and browning effect.
(3) …………………
However microwave ovens are used in some fast food chains and special microwave bags
are available for cooking fowl or large joints of meat.
Professional chefs generally recommend using microwaves for a limited set of tasks,
including: melting fats (such as butter) and chocolate, cooking grains like oatmeal and grits,
cooking rice, thawing frozen meats and vegetables before cooking by other methods and
quickly reheating already-cooked foods.
Using a microwave to boil water is potentially dangerous, due to superheating. In a
microwave, water can be raised quickly to a temperature above the boiling point before
major bubbles form, especially if it is purified and in a very clean glass vessel. (4)
…………………
This effect is rare, even for scientists who try to deliberately recreate it, and any seed
whatsoever for boiling is likely to prevent the problem. Boiling water with, for instance, a
teabag already in it will prevent any dangers by providing a seed, as will using a mug that is
not perfectly clean.

The risk greatly increases when water has already been boiled once in the same container.
This situation can occur if the user of the oven boiled the water once, forgot about it, then
came back later to boil it again. The first time the water boils, the seed bubbles
(microscopic bubbles of air around which larger steam bubbles grow) are used up and
largely eliminated from the water as it cools down. When the water is heated again, the lack
of seed bubbles causes superheating, and a risk of a steam explosion when the water's
surface is disturbed.
Placing something in the water before heating can mostly alleviate this risk. If you are
planning to mix something with the water, say tea or hot chocolate, adding it before heating
will insure that the water boils. Otherwise, placing a wood object, for instance a chopstick,
in the water before heating will also work.
Care should be taken when removing heated water from a microwave. Make sure that the
hands are protected from possible liquid boil-over, place the container on a level, heat-
proof surface and stir liquid with a warm spoon. Also, never add powdered substances
(such as instant coffee or cocoa mix) to the container taken from the microwave, due to the
addition of all those seed bubbles and the potential for violent, spontaneous boiling. (5)
…………………
Metal objects, such as metal utensils, in a microwave oven can lead to dangerous situations.
Metals do not absorb microwaves effectively. Instead, metals reflect microwaves, thereby
preventing the latter from reaching the food. (6) …………………
Thin metal layers, such as metal foil and mugs with metal trim can melt or burn due to the
strong electrical currents that are generated in metal objects. However, small solid metal
objects, such as spoons, in combination with a large amount of absorbing food or liquid,
normally do not lead to problems.
This article is licensed under the GNU Free Documentation License. It uses material from the
Original Wikipedia article.

3
21 tháng 2 2020

IV. In the following text, six sentences or parts of sentences have been removed. Above
the extract you will find the six removed sentences PLUS one sentence which doesn't fit.
Choose from the sentences (A-G) the one which fits each gap (1-6). Remember, there is
one extra sentence you do not need to use. Write the correct letter in the box.
Choose from the following sentences to fill the spaces in the text. There is ONE extra.
A. Using a microwave for cooking a large food mass is difficult due to limited penetration of
microwaves.
B. This can be overcome by leaving the food to stand for a few minutes when cooking is
completed.

C. It is advised that the water should be poured slowly into another container that already
contains the powder.
D. In this way, buying a microwave oven with a turntable ensure the food is cooked
throughout.
E. Conversely the microwaves do not heat glass, ceramic and plastic containers.
F. If the microwaves are not absorbed inside the oven, the oven can be damaged by
electrical arcs and overheating of the microwave source.
G. When water in that state is disturbed, it can suddenly and unexpectedly boil violently.
MICROWAVING
Microwaving is a method of cooking where food is bombarded by microwaves, usually
within an appliance called a microwave oven which excite the water, fat and sugar
molecules, thereby heating (cooking) both the outside and center of the food at the same
time. (1)………E…………
(A common myth is that a microwave oven cooks from the center of the food outward. This
appears to happen because heat generated at the surface escapes more readily from the
surface of the food into the surrounding air.) One advantage of microwaving is that small
amounts of food can be heated very quickly, making it useful for reheating leftovers.
The disadvantage is that food which is microwaved does not undergo some of the chemical
reactions, such as browning, which makes the food visually attractive. Primitive microwave
ovens often do not cook evenly, leading to a concern that bacteria easily killed by more
traditional cooking methods may survive the quick cooking time in "cold spots", though the
food item as a whole is cooked to a safe average temperature. (2) …B
Some high-end microwave ovens are combined with a convection oven which basically
cook the food using microwave and hot air simultaneously to achieve both the fast cooking
time and browning effect.
(3) ………A…………
However microwave ovens are used in some fast food chains and special microwave bags
are available for cooking fowl or large joints of meat.
Professional chefs generally recommend using microwaves for a limited set of tasks,
including: melting fats (such as butter) and chocolate, cooking grains like oatmeal and grits,
cooking rice, thawing frozen meats and vegetables before cooking by other methods and
quickly reheating already-cooked foods.
Using a microwave to boil water is potentially dangerous, due to superheating. In a
microwave, water can be raised quickly to a temperature above the boiling point before
major bubbles form, especially if it is purified and in a very clean glass vessel. (4)
………G…………
This effect is rare, even for scientists who try to deliberately recreate it, and any seed
whatsoever for boiling is likely to prevent the problem. Boiling water with, for instance, a
teabag already in it will prevent any dangers by providing a seed, as will using a mug that is
not perfectly clean.

The risk greatly increases when water has already been boiled once in the same container.
This situation can occur if the user of the oven boiled the water once, forgot about it, then
came back later to boil it again. The first time the water boils, the seed bubbles
(microscopic bubbles of air around which larger steam bubbles grow) are used up and
largely eliminated from the water as it cools down. When the water is heated again, the lack
of seed bubbles causes superheating, and a risk of a steam explosion when the water's
surface is disturbed.
Placing something in the water before heating can mostly alleviate this risk. If you are
planning to mix something with the water, say tea or hot chocolate, adding it before heating
will insure that the water boils. Otherwise, placing a wood object, for instance a chopstick,
in the water before heating will also work.
Care should be taken when removing heated water from a microwave. Make sure that the
hands are protected from possible liquid boil-over, place the container on a level, heat-
proof surface and stir liquid with a warm spoon. Also, never add powdered substances
(such as instant coffee or cocoa mix) to the container taken from the microwave, due to the
addition of all those seed bubbles and the potential for violent, spontaneous boiling. (5)
…………C………
Metal objects, such as metal utensils, in a microwave oven can lead to dangerous situations.
Metals do not absorb microwaves effectively. Instead, metals reflect microwaves, thereby
preventing the latter from reaching the food. (6) …………F………
Thin metal layers, such as metal foil and mugs with metal trim can melt or burn due to the
strong electrical currents that are generated in metal objects. However, small solid metal
objects, such as spoons, in combination with a large amount of absorbing food or liquid,
normally do not lead to problems.
This article is licensed under the GNU Free Documentation License. It uses material from the
Original Wikipedia article.

21 tháng 2 2020

Nguyễn Bích Ngọc ngô mai phương một tip nhỏ cho 2 e khi làm bài này đúng ra là nên đọc hết cả bài nhưng mà cj thấy bài này sử dụng từ vựng khá là đơn giản thôi nên chỉ cần đọc câu trước và câu phía sau câu chỗ cần điền các e có thể đoán ra phần nào cho chắc ăn các e có thể đọc lại đoạn đó sau khi chọn. < chỉ bài này thôi là đọc câu trước và câu sau là tìm dduocj thôi chứ cj ko chắc là bài nào cũng vậy nah >

I. Fill in the blank with the correct form of the word 1. What is the correct .............. of this word (pronounce) 2. Last week we have an ........... summer holiday ( enjoy) 3. The ............ of the project made me tense ( important) 4. You had better do some........... for the final exam ( revise) 5. ....................., her illness was more serious than we thought ( fortunate) II. Fill in each gap with a suitable word to complete th following passage Rivers are one of the...
Đọc tiếp

I. Fill in the blank with the correct form of the word

1. What is the correct .............. of this word (pronounce)

2. Last week we have an ........... summer holiday ( enjoy)

3. The ............ of the project made me tense ( important)

4. You had better do some........... for the final exam ( revise)

5. ....................., her illness was more serious than we thought ( fortunate)

II. Fill in each gap with a suitable word to complete th following passage

Rivers are one of the world's most important natural resources . Many cities are on the large rivers, and (1)......... every country has a least one river that (2)............. an important part in the lives of its people . Beside transportation, rivers (3).......... water for crops, water to drink , and re creation for people who live along their (4).............. And in (5)............ to get water for crops , engineers sometimes build a dam (6) a river and let water become a lake behind the dam . Then people can use their water not (7)........ irrigate fields but also to make eletricity for homes and industries. (8)........ the water often becomes polluted when cities river bank grow (9) ............ and the number of industries increases. We are learning that it is necessary to (10) ....... rivers clean if we want to enjoy the benefits of the natural resources.

1
17 tháng 11 2017

I. Fill in the blank with the correct form of the word

1. What is the correct pronunciation of this word (pronounce)

2. Last week we have an enjoyable summer holiday ( enjoy)

3. The importance​ of the project made me tense ( important)

4. You had better do some revision for the final exam ( revise)

5. Unfortunately, her illness was more serious than we thought ( fortunate)

II. Fill in each gap with a suitable word to complete th following passage

Rivers are one of the world's most important natural resources . Many cities are on the large rivers, and (1) almost every country has a least one river that (2) plays an important part in the lives of its people . Beside transportation, rivers (3) provide water for crops, water to drink , and re creation for people who live along their (4) banks And in (5) order to get water for crops , engineers sometimes build a dam (6)across a river and let water become a lake behind the dam . Then people can use their water not (7) Only irrigate fields but also to make eletricity for homes and industries. (8) However the water often becomes polluted when cities river bank grow (9) in size and the number of industries increases. We are learning that it is necessary to (10) keep rivers clean if we want to enjoy the benefits of the natural resources.