1.A

2.B

3.D

4.B

5.B

B

1A

2C

3B

4A

5C

6D

7C

8B

9A

10C

II.

1. Won't be 

2. has

3. have seen

4. are-speaking

5. will finish

TK

Trong toán học, tỷ lệ hay tỉ số là một mối quan hệ giữa hai số cho biết số đầu tiên chiếm số thứ hai bao nhiêu lần. Ví dụ, nếu một giỏ trái cây có chứa tám cam và sáu chanh, thì tỷ lệ cam với chanh là tám chia sáu (nghĩa là 8:6, tương đương tỷ lệ 4:3).

A

Thì sao?

0,25 thế kỉ

1. Robots will help me do the housework.

2. If he washes my car, I will give him 30000 dong.

3. Stdney is the most beautiful and the cleanest city in the world.

4. My mothes goes shopping twice a week.

5. I am so thirsty so I will buy a bottle of mineral water.

I. (1) change     

(2) use       

(3) control     

(4) turn on     

(5) make

II.

1.B

2.A

3.A

4.B

5.B

Most people think of computers as very modern inventions, products of our new technological. But actually the idea for a computer (1)      had been   worked out over two centuries ago by a man

(2)       called              Charles Babbage.

Babbage was born (3)      in        1791 and grew up to be a brilliant mathematician. He drew up plans for several calculating machines (4)     which     he called “engines”. But despite the fact that he (5)  stared   building some of these he never finished any of them. Over the years people have argued (6)      whether        his machines would ever work. Recently, however, the Science Museum in London has finished building (7)        an        engine  based   on        one      of Babbages designs. (8)  It    has taken six years to complete and more (9)                 than   four thousand parts have been specially made. Whether it works or not, the machine will be on show at a special exhibition in the Science Museum (10) to   remind people of Babbages work.