选择与句中画线部分意义最接近的解释。

1. Yang Shanzhou becomes well-known in China for planting so many trees for people.

A. great

B. famous

C. friendly

D. warm

2. Try again, maybe you will come up with a better idea.

A. turn up

B. put up

C. get up

D. think up

3. It's a chicken-and-egg question. I can't answer you now.

A. easy 

B. clear

C. difficult

D. funny

4. Come and join us. We are short of hands.

A. We need help.

B. We hurt our hands.

C. Our hands are short.

D. We can do it by ourselves,

5. —Dad, did you tell mother about our gift for her birthday?

  —No. Don't let the cat out of the bag. Let's give her a surprise

A. ask her

B. let her know

C. take away the eat

D. give her a eat

四环素类的不良反应中错误的是

A．空腹口服易引起胃肠道反应

B．可导致幼儿乳牙釉质发育不全，牙齿发黄

C．可引起二重感染

D．不引起过敏反应

E．长期大量静滴，可引起严重肝损害