单选题 A hundred{{U}} {{U}} 1 {{/U}} {{/U}}years ago there were a lot of dinosaurs (恐龙) in the world. Some lived on land. Some lived in the sea. Some{{U}} {{U}} 2 {{/U}} {{/U}}fly. A lot of them{{U}} {{U}} 3 {{/U}} {{/U}}very large and some had horns (角) or long teeth{{U}} {{U}} 4 {{/U}} {{/U}}the monsters (怪物) in films. Most of the dinosaurs were plant-eaters, but some of them could kill{{U}} {{U}} 5 {{/U}} {{/U}}eat very big animals.
The world was full of dinosaurs for 135 million (百万，百万个) years. 60 million years ago, however (然而，不管怎样), they were{{U}} {{U}} 6 {{/U}} {{/U}}dead.{{U}} {{U}} 7 {{/U}} {{/U}}happened to them?
Some scientists say that about 65 million years ago the world's climate (气候){{U}} {{U}} 8 {{/U}} {{/U}}cold (寒冷的，伤风) and this cold climate killed the dinosaurs.
Now we eau only see dinosaur bones (骨骼) in{{U}} {{U}} 9 {{/U}} {{/U}}, but we can not see a{{U}} {{U}} 10 {{/U}} {{/U}}dinosaur any more.

单选题

A. hundred
B. thousands
C. million

A
B
C

【正确答案】 C

【答案解析】从第二段"60 million years ago"的提示，这里应该填million。

单选题

A. were
B. could
C. would

A
B
C

【正确答案】 B

【答案解析】后面fly用的是原形，再从行文的时态一致性考虑，选B最佳。

单选题

A. lived
B. were
C. had

A
B
C

【正确答案】 B

【答案解析】由后面的large立刻排除[A]lived和[C]had。选[B]were。

单选题

A. like
B. with
C. as

A
B
C

【正确答案】 A

【答案解析】like和as都可以做“像”讲；区别在于：like是介词，后接名词或代词；as是连词，一般后接一个从句。

单选题

A. to
B. but
C. and

A
B
C

【正确答案】 C

【答案解析】显然要用一个并列连词and连接两个动词kill和eat。

单选题

A. all
B. not
C. both

A
B
C

【正确答案】 A

【答案解析】all指三者以上的“都”；both指二者的“都”。显然奉题选A。

单选题

A. How
B. Why
C. What

A
B
C

【正确答案】 C

【答案解析】What happened to them，在它们身上发生了什么事呢。

单选题

A. started
B. got
C. was

A
B
C

【正确答案】 B

【答案解析】get cold这里有变冷的意思。

单选题

A. museums
B. picture
C. history

A
B
C

【正确答案】 A

【答案解析】显然只有museum才有恐龙的骨骼化石。

单选题

A. big
B. real
C. dead

A
B
C

【正确答案】 B

【答案解析】要与前半句构成转折关系，填real最佳，与前半句中的bones相对应。