3.9The family at a small hotel for the night.

4.9下列说法组成四个选项,全都符合文意的一项是( )
①热作用是人体在电磁场下体温升高的一种物理反应
②引发热作用和非热作用的电磁波的频率是不同的
③研究证明,白血病和肿瘤是由于低频电磁波干扰人体微弱电磁场而造成的
④人处在一定强度的电磁场中,就会发生热作用或非热作用
⑤电磁波对机体表层不会造成明显损伤

A. 　②④⑤

B. 　①③④

C. 　②③⑤

D. 　①②③

3.18 We will go out for a picnic ()it doesn’ t rain tomorrow.

A. 　 if

B. 　 after

C. 　 that

D. 　 though

3.14 Go straight forward and you ()the shop on your right.

A. 　 would see

B. 　 will see

C. 　 have seen

D. 　 saw

2.21。The tallest building in America’s capital city is the Washington Monument(纪念碑).It is( 21 )for George Washington, the first president of the United States. He( 22 )the American colonies (殖民地)in the War of Independence (独立)against England from 1775 to 1783. As president, he( 23 )the new United States of America through its first difficult( 24 ).
The monument is one of the most popular (25) in the world. Lights shine on it at night. It can usually be( 26 )from far away.

A. 　covered

B. 　 named

C. 　 taken

D. 　 acted

2.6词汇与语法知识
On the table is my book;() is over there.

A. 　our

B. 　 you

C. 　 mine

D. 　 yours

5.32.

A. 　 then

B. 　 when

C. 　 suddenly

D. 　 and

1.19 We’d like to know the reason ()she didn’t accept the job.

A. 　 what

B. 　 which

C. 　 why

D. 　 when

3.16 My brother worked ()than any other member in his team and got the first prize.

A. 　 hard

B. 　 harder

C. 　 hardest

D. 　 hardly

3.19 —Do you mind if I open the window?
---().

A. 　Yes, please

B. 　 No, go ahead

C. 　 No, please don’t

D. 　 Yes, you’d better do

1.10下列短语,最适合做文章标题的一项是( )。

A. 　植物进化与维管束

B. 　植物桥梁:维管束

C. 　维管束与植物生长

D. 　植物的面包:维管束