Vận tốc của xe A và xe B:

\(v_{12}=v_1+v_2=1+5=6m\text{/}s\)

thi?

13. B

B

1 taking

2 comedian

3 organizing

4 poet

5 musician

6 designed 

7 taking

8 opera

Ex6

1 B

2 A

3 C

4 D

5 C

6 A

7 D

8 A

9 C

Bài 5: 

ĐKXĐ: \(\left\{{}\begin{matrix}x\ge0\\x\ne1\end{matrix}\right.\)

Ta có: \(G=\dfrac{x-\sqrt{x}}{\sqrt{x}-1}-\dfrac{x-1}{\sqrt{x}+1}\)

\(=\sqrt{x}-\sqrt{x}+1\)

=1

chụp thiếu rồi!

a)a>1<32

1 as exciting as action film

2 the same as Salvador's

3 as well as my sister

4 the same

5 as long as we thought at first

Ex11

1 D 

2 D

3 D

4 D

1. Yes it is

2.Chung cake was invented by Prince Lang Lieu

3.Viet Nam

4.0 hiểu :v

5.The cake is boiled for about 12 hours 

1. Yes, it is.

2. Chung cake was invented by Prince Lang Lieu - the 18th Prince of Hung Emperor

3. Chung cake made from sticky rice, pork, green beans, pepper and onions

4. It is wrapped in dong leaves.

5. Chung cake is boiled for about 12 hours over a wood burning stove