Việt Nam nằm trong khu vực nội chí tuyến nhưng không khô nóng như các nước cùng vĩ độ do:

a. Có gió Tây ôn đới và gió Mậu dịch b. Giáp biển, có gió Mậu dịch

c. ¾ địa hình nước ta là đồi núi d. Giáp biển, có gió mùa

Nguyên nhân nào tạo ra ngày và đêm trên Trái đất:

a. Dạng hình cầu của Trái đất

b. Trái đất chuyển động quanh Mặt trời

c. Dạng hình cầu và chuyển động tự quay quanh trục của Trái đất

d. a và b đúng

Từ một đỉnh tháp cách mặt đất 80m, người ta thả rơi một vật. 2 giây sau ở tầng tháp thấp hơn 10m người ta ném vật thứ hai xuống theo hướng thẳng đứng để hai vật chạm đất cùng lúc. Cận tốc của vật thứ 2 là .

1 ) Why did she wait for you at the station .

=>

2 ) They had the mechamic repain the engine

=>

3) The woman is going to do exercises nest week.

=>

4) The girl doesn't understand my lesson clearly

=>

5) They had packed a present for me .

=>

6) He has just visited my home town.

=>

7 ) The girl was playing the trumpet at the time .

=>

8 ) How long have you fed the baby ?

=>

9 )The boy will have finished him task early .

=>

10) The girl didn't give me any present on my birthday .

=>

11 ) We are written a lot of poems for competiton

=>

12 ) They hadn't had a woman open the door

=>

Xác định số nguyên tử N có trong 0,2 mol khí nitơ

1 My parents expect me to speak in a polite voice to other people

=> It's my parents wish that I ___________________

2 I am expected to get home by curfew

=> I should ___________________________

3 My parents never let ask for things in the supermarket

=> My parents always refuse ____________________

4. It's likey to be more effective to have a few clear and specific rules a long list

=> A few clear and specific rules ____________

5. It's useful for many families to write down a set of rules about how family members are expected to behave

=> My family finds _________________________

6 ) Many parents think that it's a good idea to make the rules public by sticking them on the fridge

=> Many parents think that they ____________________

7 ) It's necessary for young children to get supervision and support to follow family rules

=> Young children will ______________

8. It's important for a family to have rules about safe behavior, including rules anout alcohol use, dation and curfew .

=> A family must ______________________-

Làm rồi giải thích giúp mk đk ko ạ :'(

1 My parents expect me to speak in a polite voice to other people

=> It's my parents wish that I ___________________

2 I am expected to get home by curfew

=> I should ___________________________

3 My parents never let ask for things in the supermarket

=> My parents always refuse ____________________

4. It's likey to be more effective to have a few clear and specific rules a long list

=> A few clear and specific rules ____________

5. It's useful for many families to write down a set of rules about how family members are expected to behave

=> My family finds _________________________

6 ) Many parents think that it's a good idea to make the rules public by sticking them on the fridge

=> Many parents think that they ____________________

7 ) It's necessary for young children to get supervision and support to follow family rules

=> Young children will ______________

8. It's important for a family to have rules about safe behavior, including rules anout alcohol use, dation and curfew .

=> A family must ______________________-

Cho a,b,c là ba số thực dương thỏa mãn a+b+c=3. CMR:

\(\sqrt[3]{3a+5b}+\sqrt[3]{3b+5c}+\sqrt[3]{3c+5a}\le6\)

C/m : \(2^{k+1}+2^k=6^k\)

Write a paragraph

Some people say that " Money is more necessary than health " What do you thin about it ? Do you agree or not , gue some reason ?