先通读下面两篇短文，掌握其大意，然后从各题所给的A、B、C、D四个选项中选出可以填入相应空白处的最佳选项。

There is a small thing we use every day. We usually put （1） in the bathroom. If we don’t use it, we might have tooth problems. Can you guess what it is? Yes, it’s the toothbrush. But do you know （2） about its history?

Before toothbrushes appeared, the ancient Chinese people （3） their teeth with some small tree branches（树枝）. About 800 years ago, people （4） a kind of toothbrushes with pig hair and bamboo. It might be the world’s earliest form of toothbrushes. As time went by, the form of toothbrushes （5） . For example, people didn’t use pig hair to make toothbrushes （6） it was too hard（硬的）. They began to use horse-tail hair which was much softer. Imagine that you travel back to hundreds of years ago and brush your teeth （7） . It sounds fantastic, doesn’t it?

Around the 15th century, the Chinese toothbrush found its way into Europe. It became （8） among local people soon. The （9） of toothbrushes was not as famous as that of paper-making, but it was very useful in daily life. Today we get into the good （10） of brushing teeth. We should thank the ancient Chinese for it.

（1）

A．

them

B．

they

C．

it

D．

its

（2）

A．

something

B．

anything

C．

somewhere

D．

anywhere

（3）

A．

cleaned

B．

broke

C．

took

D．

protected

（4）

A．

did

B．

repaired

C．

made

D．

showed

（5）

A．

appeared

B．

touched

C．

discovered

D．

changed

（6）

A．

because

B．

so

C．

or

D．

but

（7）

A．

angrily

B．

hardly

C．

comfortably

D．

badly

（8）

A．

popular

B．

different

C．

strange

D．

boring

（9）

A．

action

B．

pollution

C．

tradition

D．

invention

（10）

A．

task

B．

habit

C．

result

D．

fact