钢和生铁都是铁碳合金。其中，碳的质量分数（又称含碳量）小于0.77%的叫钢，碳的质量

阅读理解。

       (On the way to the Shancheng Theater, Rain knocks into(撞上) an old man.)

Rain: Sorry, did I hurt you?

Mr. Read: Oh, I'm OK. Don't worry about it, young man. You seem to be in a great hurry.

Rain: Yes, I'm new here. I'm looking for the Shancheng Theater. Could you tell me the way, please?

Mr. Read: Certainly. Go down this street till you reach the second crossing (十字路口), then turn right and you

               will find it.

Rain: How far is it from here?

Mr. Read: It's about three kilometers.

Rain: I must get there as soon as possible, but how can I get there?

Mr. Read: There is no bus to go there now. You had better take a taxi.

Rain: I see. Thanks a lot. Sorry for giving you so much trouble.

1. Rain looks worried (着急) because _______. [ ]

A. he wants to go to the Shancheng Theater

B. he knocks into an old man

C. he is looking for an old man

D. he is hungry

2. Rain had better go to the Shancheng Theater _______. [ ]

A. by bus

B. by bike

C. on foot

D. by taxi

3. It's about kilometers from here to the theater _______. [ ]

A. three

B. two

C. four

D. five

4. Does Rain know the old man? [ ]

A. Sorry, I don't know.

B. Yes, he does.

C. No, he doesn't.

D. Yes, he knows him well.

5. What's the best title (题目)? [ ]

A. An Accident.

B. Asking the Way.

C. Rain and Mr. Read.

D. Asking for Help.

可行性研究的依据是()。

A.项目建议书

B.融资方案

C.工程建设定额

D.合作各方签订的协议书

E.项目市场信息资料

ADCC(Antibody –dependent cell-mediatedcytotoxicity)

属于手阳明大肠经的腧穴是（）

A.曲池

B.公孙

C.照海

D.丰隆

E.太冲

历史学习离不开对不同时代阶特征的准确把握。下列是相关时代与特征对应正确的是（）