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22 tháng 3 2022

6. They would rather Nam didn't smoke in the office.

7. You should practice speaking English every day.

8. What did you talk to him last night?

9. It isn't easy to learn English in a short time.

20. Your room is larger and more comfortable than ours.

23 tháng 3 2022

6.      They would rather Nam not smoking in the office.

7.      You should practice speaking English every day.

8.      What did you talk to him about last night?

9.      It’s not easy learning English in a short time.

10.  Your room is larger and more comfortable than ours.

20 tháng 10 2021

\(9,=\dfrac{\sqrt{5}+1-\sqrt{5}+1}{\left(\sqrt{5}-1\right)\left(\sqrt{5}+1\right)}=\dfrac{2}{4}=\dfrac{1}{2}\\ 10,=\dfrac{\sqrt{5}+2+\sqrt{5}-2}{\left(\sqrt{5}-2\right)\left(\sqrt{5}+2\right)}=2\sqrt{5}\\ 11,=\dfrac{8+6\sqrt{2}-8+6\sqrt{2}}{\left(4-3\sqrt{2}\right)\left(4+3\sqrt{2}\right)}=\dfrac{12\sqrt{2}}{-2}=-6\sqrt{2}\\ 12,=\dfrac{2+\sqrt{6}+2-\sqrt{6}}{\left(2-\sqrt{6}\right)\left(2+\sqrt{6}\right)}=\dfrac{4}{-2}=-2\\ 13,=\sqrt{2}-1+\sqrt{2}+3=2\sqrt{2}+2\\ 14,=2-\sqrt{3}+\sqrt{3}-1=1\\ 15,=3-\sqrt{5}+\sqrt{5}-2=1\)

22 tháng 9 2021

Ex1 ko có verb à

Ex2

1 like

2 listen

3 wears

4 teaches

5 do

6 goes

7 comes

8 goes

9 watch

10 walks

11 is

12 washes

13 studies

14 wants

15 plays

16 buys

17 studies

18 tries

19 washes

20 cries

21 says

22 flies

23 don't have

22 tháng 9 2021

verb là tobe ạ

 

15 tháng 7 2021

a computer is used to do that job nowadays

He will be seen off at the airport by all his friends 

Beer used to be drunk for breakfast in England years ago

Tea can not made with cold water.

the floor was being cleaned when i arrived

Should Julia be helped with the sewing ?

1 tháng 12 2021

làm ơn giup mk với

 

16 tháng 11 2021

Một gen có 2400 nucleotit ⇒ N = 2400 Nu

⇒ Số chu kì xoắn là:

C = N : 20 = 2400 : 20 = 120 (chu kì)

16 tháng 11 2021

Chiều dài đoạn phân tử ADN:L=N/2.3,4

               =>L=2400/2.3,4=4080 (Ao)