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28 tháng 3 2021

1.      It … the most serious problem .

A. pollution           B. polluted           C. pollute            D. pollutan

28 tháng 3 2021

1.      It … the most serious problem .

A. pollution           B. polluted           C. pollute            D. pollutant

Chọn câu trả lời đúng nhất để điền vào chỗ 3 chấm và nếu bạn nào giỏi môn anh thì giải thích giúp mình vì sao lại chọn với ạ J :1.       Nuclear energy is … , but it is dangerous .A.      Renewable         B. non-renewable        C. natural resource          D. fossil fuel1.       fossil fuels are very common in our society but they … the environment .A.      Waste          B. pollute          C. renew          D. provide2.       All the house in our village...
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Chọn câu trả lời đúng nhất để điền vào chỗ 3 chấm và nếu bạn nào giỏi môn anh thì giải thích giúp mình vì sao lại chọn với ạ J :

1.       Nuclear energy is … , but it is dangerous .

A.      Renewable         B. non-renewable        C. natural resource          D. fossil fuel

1.       fossil fuels are very common in our society but they … the environment .

A.      Waste          B. pollute          C. renew          D. provide

2.       All the house in our village will be … by solar energy .

A.      Frozen          B. widened          C. heated          D. heightened

3.       Several governments try to … the use of fossil fuels .

A.      waste          B. save          C. reduce          D. increase

4.       at this time next week , we … a wind turbine in our garden .

A.      will installed          B. will be installing          C. install          D. installed

5.       low energy light bulbs should be used to … electricity .

A.      convert          B. save          C. spend          D. buy

6.       it is a good idea to use … when travelling long distances .

A.      private cars          B. public transport          C. cars          D. taxis

7.       “why is it called a … source ?” – “ because it can be replaced easily and quickly ”.

A.      renewable          B. non-renewable          C. effective          D. specific

8.       we must … the amount of water our family use every day .

A.      lessen          B. narrow          C. lower          D. reduce

9.       wave energy is a source of … energy .

A.      environmental friendly           B. environmentally friendliness           

C.    environment friendly                 D. environmentally friendly

11. alternative sources of energy … developed in the near future .

A. has been           B. will be          C. is          D. was

12. she … cooking in the kitchen at 7 PM tomorrow .

A. will           B. is           C. will be           D. be

13. some new energy-saving bulbs … in the dining room .

A. will be put           B. will put be           C. will put           D. will be putting

14. what should we do to … electricity ?

A. take           B. save           C. cut           D. waste

15. the wind , the sun , and the wave are some types of … sources of energy .

A. cheap           B. costly           C. changeable           D. alternative

Cảm ơn các bạn trước vì đã giúp mình nhé J

3
28 tháng 3 2021

1.       Nuclear energy is … , but it is dangerous .

A.      Renewable         B. non-renewable        C. natural resource          D. fossil fuel

1.       fossil fuels are very common in our society but they … the environment .

A.      Waste          B. pollute          C. renew          D. provide

2.       All the house in our village will be … by solar energy .

A.      Frozen          B. widened          C. heated          D. heightened

3.       Several governments try to … the use of fossil fuels .

A.      waste          B. save          C. reduce          D. increase

4.       at this time next week , we … a wind turbine in our garden .

A.      will installed          B. will be installing          C. install          D. installed

5.       low energy light bulbs should be used to … electricity .

A.      convert          B. save          C. spend          D. buy

6.       it is a good idea to use … when travelling long distances .

A.      private cars          B. public transport          C. cars          D. taxis

7.       “why is it called a … source ?” – “ because it can be replaced easily and quickly ”.

A.      renewable          B. non-renewable          C. effective          D. specific

8.       we must … the amount of water our family use every day .

A.      lessen          B. narrow          C. lower          D. reduce

9.       wave energy is a source of … energy .

A.      environmental friendly           B. environmentally friendliness           

C.    environment friendly                 D. environmentally friendly

11. alternative sources of energy … developed in the near future .

A. has been           B. will be          C. is          D. was

12. she … cooking in the kitchen at 7 PM tomorrow .

A. will           B. is           C. will be           D. be

13. some new energy-saving bulbs … in the dining room .

A. will be put           B. will put be           C. will put           D. will be putting

14. what should we do to … electricity ?

A. take           B. save           C. cut           D. waste

15. the wind , the sun , and the wave are some types of … sources of energy .

A. cheap           B. costly           C. changeable           D. alternative

28 tháng 3 2021

1.       Nuclear energy is … , but it is dangerous .

A.      Renewable         B. non-renewable        C. natural resource          D. fossil fuel

1.       fossil fuels are very common in our society but they … the environment .

A.      Waste          B. pollute          C. renew          D. provide

2.       All the house in our village will be … by solar energy .

A.      Frozen          B. widened          C. heated          D. heightened

3.       Several governments try to … the use of fossil fuels .

A.      waste          B. save          C. reduce          D. increase

4.       at this time next week , we … a wind turbine in our garden .

A.      will installed          B. will be installing          C. install          D. installed

5.       low energy light bulbs should be used to … electricity .

A.      convert          B. save          C. spend          D. buy

6.       it is a good idea to use … when travelling long distances .

A.      private cars          B. public transport          C. cars          D. taxis

7.       “why is it called a … source ?” – “ because it can be replaced easily and quickly ”.

A.      renewable          B. non-renewable          C. effective          D. specific

8.       we must … the amount of water our family use every day .

A.      lessen          B. narrow          C. lower          D. reduce

9.       wave energy is a source of … energy .

A.      environmental friendly           B. environmentally friendliness           

C.    environment friendly                 D. environmentally friendly

11. alternative sources of energy … developed in the near future .

A. has been           B. will be          C. is          D. was

12. she … cooking in the kitchen at 7 PM tomorrow .

A. will           B. is           C. will be           D. be

13. some new energy-saving bulbs … in the dining room .

A. will be put           B. will put be           C. will put           D. will be putting

14. what should we do to … electricity ?

A. take           B. save           C. cut           D. waste

15. the wind , the sun , and the wave are some types of … sources of energy .

A. cheap           B. costly           C. changeable           D. alternative

2 tháng 2 2022

a. 40/16 = 10/4 , 84/21 = 28/7 = 4

2 tháng 2 2022

\(a,\frac{40}{16}=\frac{40:4}{16:4}=\frac{10}{4}=\frac{10\times20}{4\times20}=\frac{200}{80}\)

\(b,\frac{84}{21}=\frac{84:3}{21:3}=\frac{28}{7}\)

29 tháng 9 2018

a , Điểm O nằm giữa một điểm bất kì khác O của tia Ox và một điểm bất kì khác O của tia Oy.

Vẽ hình:

O B A x y

b , không còn cách nào khác kết quả trên 

1 tháng 3 2022

sẻ

1 tháng 3 2022

sáo

6 tháng 5 2023

1. C

2. B

3. C

#ĐN

Đọc đoạn văn sau và chọn câu trả lời đúng cho các câu hỏi. (0,8 điểm)Air pollution is a serious problem in many cities. Motor vehicles, factories and other sources create so much air pollution that it may hang in the air like dirty fog. Air pollution threatens the health of the people who live in cities. City wastes cause water pollution when they are poured into the waterways. These wastes kill fish and make some areas unfit for swimming. In addition, many large cities have...
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Đọc đoạn văn sau và chọn câu trả lời đúng cho các câu hỏi. (0,8 điểm)

Air pollution is a serious problem in many cities. Motor vehicles, factories and other sources create so much air pollution that it may hang in the air like dirty fog. Air pollution threatens the health of the people who live in cities. City wastes cause water pollution when they are poured into the waterways. These wastes kill fish and make some areas unfit for swimming. In addition, many large cities have difficulties in disposing of their garbage. The amount of garbage grows each year, but places to put it are quickly filling up. Citizens, governments, industries, scientists, and business people must work together in different ways to gradually reduce pollution. For example, most cities have introduced recycling programs, which cut down on garbage and the space needed to store it. Residents separate recyclable products from garbage, and city governments provide drop-off cities or pick up the products from homes.

1. What is the main idea of the passage?

A. Air pollution is a serious problem in all cities.      B. Air pollution is a serious problem in countries.

C. Air pollution is a serious problem in many cities.

D. Air pollution is a serious problem with the governments.

2. According to the passage, city wastes cause ________.

A. air pollution                  B. water pollution    C. soil pollution       D. noise pollution

3. What does the word "it" in the passage refer to?

A.        garbage                 B. pollution             C. water                  D. problem

4. The word "different" is closest in meaning to ________.

A. like                                B. same                  C. similar                D. various

3
5 tháng 12 2021

1. What is the main idea of the passage?

A. Air pollution is a serious problem in all cities.      B. Air pollution is a serious problem in countries.

C. Air pollution is a serious problem in many cities.

D. Air pollution is a serious problem with the governments.

2. According to the passage, city wastes cause ________.

A. air pollution                  B. water pollution    C. soil pollution       D. noise pollution

3. What does the word "it" in the passage refer to?

A.        garbage                 B. pollution             C. water                  D. problem

4. The word "different" is closest in meaning to ________.

A. like                                B. same                  C. similar                D. various

5 tháng 12 2021

C

A

a

d

 

29 tháng 8 2015

Hiệu của 2 số đó là 12 + 1 = 13

30 tháng 6 2021

hiệu của hai số là 12+1 =13

7 tháng 4 2019

*6=86 và *=3

7 tháng 4 2019

a)*6=86 và *=3

b)2*=23 và *4= 54

c)2*=23 và*7=17

20 tháng 3 2016

1;4;5;9;14;23

Quy luật ở đây là kể từ số thứ 3 thì số đằng sau bằng tổng 2 số đứng trước nó. Đây chính là dáy số Fibonacci

20 tháng 3 2016

1,4,5,9,... suy ra:

Quy luật ở đây là kể từ số thứ 3 thì số đằng sau bằng tổng 2 số đứng trước nó. Đây chính là day số Fibonacci