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7 tháng 1 2017

Đáán A

Gii thích: Let smt out: đưa cái gì ra ngoài

Dch: hơi nóng t đám cháy rng làm tan chy nón thông và đưa ht ra ngoài

Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes harm ecosystems. If there is too (1)____ rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals that feed on it may also die or move away. Some changes are good for ecosystems. Some pine forests need fire for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets...
Đọc tiếp

Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes harm ecosystems. If there is too (1)____ rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals that feed on it may also die or move away. Some changes are good for ecosystems. Some pine forests need fire for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets the seeds (2)_____. Polluting the air, soil, and water can harm ecosystems. Building (3)_______ on rivers for electric power and irrigation can harm ecosystems around the rivers. Bulldozing wetlands and cutting down (4)________ destroy ecosystems. Ecologists are working with companies and governments to find better ways of catching fish, cutting down trees, and building dams. They are looking for ways to get food, lumber, and other products for people (5)________ causing harm to ecosystems

Điền vào số 5

A. avoid

B. without

C. not

D. no

1
10 tháng 9 2019

Đáán B

Gii thích: Without +Ving: ngoài vic

Dch: H đang tìm cách ly thăn, g và các sn phm khác cho con người mà không câu hi cho môi trường.

Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes harm ecosystems. If there is too (1)____ rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals that feed on it may also die or move away. Some changes are good for ecosystems. Some pine forests need fire for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets...
Đọc tiếp

Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes harm ecosystems. If there is too (1)____ rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals that feed on it may also die or move away. Some changes are good for ecosystems. Some pine forests need fire for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets the seeds (2)_____. Polluting the air, soil, and water can harm ecosystems. Building (3)_______ on rivers for electric power and irrigation can harm ecosystems around the rivers. Bulldozing wetlands and cutting down (4)________ destroy ecosystems. Ecologists are working with companies and governments to find better ways of catching fish, cutting down trees, and building dams. They are looking for ways to get food, lumber, and other products for people (5)________ causing harm to ecosystems

Điền vào số 3

A. hills

B. forests

C. jungles

D. woods

1
2 tháng 8 2017

Đáán B

Gii thích: A: đồi

B: rng

C: sui

D: cánh rng

Dch: Sam bng đất ngp nước và cht phá rng phá hy h sinh thái.

Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes harm ecosystems. If there is too (1)____ rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals that feed on it may also die or move away. Some changes are good for ecosystems. Some pine forests need fire for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets...
Đọc tiếp

Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes harm ecosystems. If there is too (1)____ rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals that feed on it may also die or move away. Some changes are good for ecosystems. Some pine forests need fire for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets the seeds (2)_____. Polluting the air, soil, and water can harm ecosystems. Building (3)_______ on rivers for electric power and irrigation can harm ecosystems around the rivers. Bulldozing wetlands and cutting down (4)________ destroy ecosystems. Ecologists are working with companies and governments to find better ways of catching fish, cutting down trees, and building dams. They are looking for ways to get food, lumber, and other products for people (5)________ causing harm to ecosystems

Điền vào số 3

A. moats

B. ditches

C. dams

D. bridges

1
17 tháng 1 2019

Đáán C

Gii thích: A: cái mương

B: cái rãnh

C: cái đập

D: cây cu

Dch: xây dng các đập thđin trên sông và h thng tưới tiêu có th làm hi tưới h sinh thái xung quanh nhng con song.

Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes harm ecosystems. If there is too (1)____ rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals that feed on it may also die or move away. Some changes are good for ecosystems. Some pine forests need fire for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets...
Đọc tiếp

Any change in one part of an ecosystem can cause changes in other parts. Droughts, storms and fires can change ecosystems. Some changes harm ecosystems. If there is too (1)____ rainfall, plants will not have enough water to live. If a kind of plant dies off, the animals that feed on it may also die or move away. Some changes are good for ecosystems. Some pine forests need fire for the pine trees to reproduce. The seeds are sealed inside pinecones. Heat from a forest fire melts the seal and lets the seeds (2)_____. Polluting the air, soil, and water can harm ecosystems. Building (3)_______ on rivers for electric power and irrigation can harm ecosystems around the rivers. Bulldozing wetlands and cutting down (4)________ destroy ecosystems. Ecologists are working with companies and governments to find better ways of catching fish, cutting down trees, and building dams. They are looking for ways to get food, lumber, and other products for people (5)________ causing harm to ecosystems

Điền vào số 1

A. little

B. a little

C. few

D. a few

1
16 tháng 11 2018

Đáán A

Gii thích: A little + Danh t không đếđược: 1 ít, mt vài

A few + Danh t đếđược : 1 ít, 1 vài

Little/ few= just a little/ just a few: rt ít, hu như không có

“rainfall” (lượng mưa) là danh t không đếđược

Dch: Nếu quá ít mưa thì cây ci s không có đủ nướđể sng

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.Millions of people are using cell phones today. In many places, it is actually considered unusual not to use one. In many countries, cell phones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.The explosion in mobile phone use around the world...
Đọc tiếp

Read the following passage and mark the letter A, B, C, or D on your answer sheet to indicate the correct answer to each of the questions.

Millions of people are using cell phones today. In many places, it is actually considered unusual not to use one. In many countries, cell phones are very popular with young people. They find that the phones are more than a means of communication - having a mobile phone shows that they are cool and connected.

The explosion in mobile phone use around the world has made some health professionals worried. Some doctors are concerned that in the future many people may suffer health problems from the use of mobile phones. In England, there has been a serious debate about this issue. Mobile phone companies are worried about the negative publicity of such ideas. They say that there is no proof that mobile phones are bad for your health.

On the other hand, medical studies have shown changes in the brain cells of some people who use mobile phones. Signs of change in the tissues of the brain and head can be detected with modern scanning equipment. In one case, a travelling salesman had to retire at young age because of serious memory loss. He couldn't remember even simple tasks. He would often forget the name of his own son. This man used to talk on his mobile phone for about six hours a day, every day of his working week, for a couple of years. His family doctor blamed his mobile phone use, but his employer's doctor didn't agree. What is it that makes mobile phones potentially harmful? The answer is radiation. High- tech machines can detect very small amounts of radiation from mobile phones. Mobile phone companies agree that there is some radiation, but they say the amount is too small to worry about.

As the discussion about their safety continues, it appears that it's best to use mobile phones less often. Use your regular phone if you want to talk for a long time. Use your mobile phone only when you really need it. Mobile phones can be very useful and convenient, especially in emergencies. In the future, mobile phones may have a warning label that says they are bad for your health. So for now, it's wise not to use your mobile phone too often

The changes possibly caused by the cell phones are mainly concerned with

A. the mobility of the mind and the body.

B. the arteries of the brain.

C. the smallest units of the brain.

D. the resident memory.

1
22 tháng 9 2018

Đáp án C

13 tháng 5 2017

Đáán D

Gii thích: melting: (adj) tan chy. Tính t ‘melting’ có dng V_ing ch tính cht ca tuyết. 

“In the spring, the melting snow turns into a large quantity of water that then runs downhill in streams.” – Vào mùđông, tuyết tan chy biến thành mt lượng nước khng l và chy xung các con sui.

25 tháng 3 2018

Đáán D

Gii thích: help to do st: giúp đỡ 

“Thus, forests and grasslands help to slow down erosion.” – Do đó, rng và đồng c giúp làm chm li s xói mòn.

20 tháng 6 2017

Đáán C

Gii thích: Tính t little ch s khan hiếm hoc thiếu và gn như mang nghĩa ph định được dùng trước danh t không đếđược (trong câu này là soil: đất trng). Ta có th dùng trng t ch mđộ so/ very để b nghĩa cho tính t little. 

“Land that is covered with trees, grass and other plants wears away very slowly, and so loses very little of its soil.” – Đấđược bao ph bi cây ci, c và các loi thc vt khác b trôi đi rt chm, và như thế mt rt ít đất trng.

26 tháng 12 2019

Đáán B

Gii thích:  Câu hi này v ng động t (phrase verb)                                        

•pick st up = lift st up: nâng lên, làm bay đ

“As the wind blows over the land, it often picks up small grains of sand.” – Khi cơn gió thi qua mt miđất, nó thường làm bay đi nhng cát nh.

•clean st out: ly cp, làm sch hoàn toàn bên trong 

VD: I must clean the fish tank out. (Tôi phi làm sch bên trong b cá.)

•carry st out: thc hiđiu gì

•hold st up: trì hoãn, ly c