Tìm x biết  7 15 + 5 3 − x = 9 10

Số đối của - 6 - 7 là 

Một vật rơi tự do từ một độ cao h. Biết rằng trong giây cuối cùng vật rơi được quãng đường 15m. Lấy g=10m/ s 2 . Thời gian rơi của vật là:

A. 1s

B. 1,5s

C. 2,5s

D. 2s

SENTENCE TRANSFORMATION

1.) My new car was stolen yester day.

Someone_______________________________

2.) '' We are waiting for the school bus '' , said the children.

The children said______________________________

3.) Do you want me to get you some water.

Shall I____________________________________

4.) I haven't played tennis since 1990.

The last time I____________________________

5.) People all over the world speak English.

English________________________________

6.) '' I can't go out after 9 p.m '' , Hoa said.

Hoa said_______________________________

7.) '' Don't make so much noise '' , my father said.

My father told me_________________________

8.) Please don't smoke in the kitchen.

Would you mind__________________________

9.) Can I use your bike for a moment?

Would you mind__________________________

10.) The girl is wearing a pink dress . Do you know her?

Do you_________________________________

11.) You've talked all the time in class.

You are_________________________________

12.) '' I can repair the bicycle myself' , Tom said to me.

Tom told_________________________________

13.) Linh said to me : '' I can fix the faucets''.

Linh said_______________________________

14.) You should clean your room regularly.

Your room______________________________

15.) Tien keeps going to school late.

Tien is__________________________________

16.) It is contest in which participants have to cook rice.

It's___________________________________

17.) The last time I saw such an interesting football match was over two years.

I've_________________________________________

18.) Nobody smokes cigarettes in hospital.

Cigarettes_____________________________________

19.) '' Do you enjoy your English class , Nam?'' the teacher said.

The teacher asked_________________________________

20.) May I leave my bike here?

Would you mind___________________________________
21.) The students will grow a lot of trees in the school garden.

A lot______________________________________________

22.) '' Is Mount Everest the highest mountain in the world?'' The teacher asked Nam

The teacher_________________________________________

23.) Trung keeps forgetting his homework

Trung is____________________________________________

24.) Roses can't possibly grow in such poor ground.

It's________________________________________________

BCNN( 1;2;3;...;10000000000000)

Đo nhiệt độ cơ thể người bình thường trong các nhiệt giai khác nhau, kết quả đo nào sau đây là sai

A.  37 ° C

B.  98 , 8 ° C

C.  37 ° C

D.  31 ° C