bài tập đó

1c

2g

3a

4h

5f

6b

7e

8d

1.       No ______matter_________ what happens, I'll do as advised.

2.       Both sunlight and electricity are forms of ______energy_________.

3.       Farmers are recommended to _______improve________ their soil using fertilizers.

4.       When we turned round the corner, the mountain _____composed______ into view.

5.       Millions of people in the world use English as their ____first_____  language.

6.       Development of the area would endanger _______wildlife____.

7.       The fight ________against_______ air pollution is an urgent task of our city at present.

8.       Is it true that __________prevention_____ is better than cure?

9.       More and more women in the world are now used to being _______independent________.

10.    Water is _______came________ of two elements: hydrogen and oxygen.

Natri hiđroxit là chất rắn có khả năng hút ẩm mạnh, tan nhiều trong nước và có màu?

A. màu vàng nhạt.

B. màu trắng.

C. không màu.

D. màu đỏ.

37. David said (that) he could not read my writing.

38. Mary asked if they would still have traffic jams in 30 year's time.

39. It take him three hours a day to do the homework.

40. Because of the bad weather, he stayed at home.

Sục 22,4 lít khí SO2 (đktc) vào bình chứa 200 ml dung dịch Ca(OH)2 2M, sau khi phản ứng kết thúc thấy có V lít khí thoát ra (đktc). Giá trị của V là:

A. 4,48.

B. 5,6.

C. 6,72.

D. 7,84.