实验室内质量控制手段主要有哪些（至少回答五种）？
题型：问答题 简答题
问题：
实验室内质量控制手段主要有哪些（至少回答五种）？
题型：问答题 简答题
Many Chinese students who have learnt English for more than ten years are still unable to speak English very well when they meet a foreigner. They seem to have mastered the basic language structure(结构), but a conversation in English will make them feel uneasy. They are afraid that other people might find out their mistakes.
It's uncommon that many students who are bad speaker
s of English can write English perfectly. This proves that they are unable to organize their idea in English. The center of the problem is that they lack practice and confidence (自信).
Why should you be afraid? Do you fear those foreigners with whom you are speaking? Don't be shy, they will not laugh at you just for a little mistake you make. The best way to get rid of trouble is to learn to speak by speaking more. I am sure that constant practice will help you succeed.
小题1:What's the best topic for the passage?
A．How to Speak to Foreigners
B．How to Study English Well
C．How to Organize 
the Idea in English
D．Practice Speaking English All the Time小题2: Many Chinese students can write English very well, but they cannot speak English fluently because _______________.
A．they seldom 
meet foreigners
B．they seldom practice speaking English
C．they had no chance to speak English
D．they think it's enough to master the basic language structure only小题3:So many Chinese students are afraid to speak to foreigners because __.
A．they are afraid they can't understand foreigners
B．they don't think their English is poor
C．they worry about making mistakes in their speaking
D．they didn't like speaking to foreigners小题4:According to the passage, which of the following is NOT true?
A．We can speak English fluently by doing more speaking.
B．If you can write English perfectly, you are able to organize your idea in English.
C．If you can write good English composition, you can speak English very well.
D．Any Chinese students can't speak English fluently because they are afraid of making mistakes.小题5:In the last paragraph, the expression "get rid of" means_______.
A．throw away
B．free oneself from
C．give up
D．do with