9.　　　 Every year many natural d___________ , such as fires, floods, happen in the world.

8.　　　 Luckily, he was one of the only few people that s________ in the traffic accident, which owned mostly to his brother’s great help.

7.　　　 He often had to spend the night in a _______ (废弃的)temple.

6.　　　 They began a __________ (一系列)of experiments.

5.　　　 Some of the children’s paintings are on ________ (展出)at school.

4.　　　 Knowledge is _______ (力量)

3.　　　 The summer ________(假期) is from July 5 to August 31.

2.　　　 The academic conference was _________ (主办)by our university.

1.　　　 He took an _______(冒险的)voyage to the North Pole.

25.　 The president of this university t_________ agree to this plan the group made.

unit 12