问题 单项选择题

志贺菌引起典型黏液脓血便的主要致病物质是

A.侵袭力

B.内毒素

C.外毒素

D.杀自细胞素

E.血浆凝固酶

答案

参考答案:B

阅读理解

What’s language for?Some people seem to think it’s for practicing grammar rules(规则) and learning lists of words --the longer the lists, the better. That’s wrong. Language is for the exchange of ideas and information. It’s meaningless if you can’t use it freely. Many students I have met know hundreds of grammar rules, but they can’t speak correctly or fluently(流利地). They are afraid of making mistakes. One shouldn’t be afraid of making mistakes when speaking a foreign language. Native(本土的) speakers make mistakes and break rules, too. Bernard Saw once wrote, “Foreigners often speak English too correctly.” But the mistakes that native speakers make are different from those that Chinese students make. They’re English mistakes in the English language. And if enough native speakers break a rule, it is no longer a rule. What used to be wrong becomes right. So Chinese students should pay attention to grammar, but they shouldn’t overdo(做过头)it. They should put communication(交际)first.

小题1: Language is used to __________ .

A.express oneself

B.practise grammar rules.

C.talk with foreigners only

D.learn lists of words小题2: If too many native speakers break a rule,________ .

A.what they use will become right.

B.they are against the law

C.they should say sorry to others.

D.they will become heroes小题3: When we speak a foreign language, we should________ .

A.speak in Chinese way

B.speak by the rules

C.speak to native speakers

D.not be afraid of making mistakes小题4:What should Chinese students put first?

A.Language

B.Communication

C.Rules

D.Grammar

多项选择题