问题 单项选择题
男,30岁。右下

金属全冠黏固一周后脱落,咬合时常有瞬间性疼痛。口腔检查见患者咬合紧,牙冠短,对牙面有银汞合金充填物,脱落的全冠完整

 

出现咬合时瞬间疼痛最可能的原因是()

A.牙髓炎

B.根尖周炎

C.金属微电流刺激

D.牙周炎

E.龈缘炎

答案

参考答案:C

填空题
阅读理解

阅读表达。

阅读下面短文并回答问题(请注意问题后的词数要求).

    Let children judge their own work. A child learning to talk

does not learn by being corrected all the time:if corrected too

much, he will stop talking. He notices a thousand time a day the

difference between the language he uses and the language those

around him use. Bit by bit, he makes the necessary changes to

make his language like other people's. In the same way,children

learning to do all the other things they learn to do without being

taught to walk, run, climb, whistle, ride a bicycle, compare(比

较) their own performances with those of more skilled people,and

slowly make the needed changes. But in school we never give a

child a chance to find out his mistakes and correct them for

himself. We do it all for him. We act as if we thought that he would

never notice a mistake unless it was pointed out to him,or corrcet

it unless he was made to. Let him work out,with the help of other

children if he wants it,what this word says,what the answer is to

that problem, whether this is a good way of saying or doing this or

not.

      If it is a matter of right answer,  as it may be in mathematics

of science, give him the answer book. Let him correct his own

paper. Why should our teachers waste time to do such routine

work?  Our job should be to help the child when he tells us that he

can't find the way to get the right answer. Let the children learn

what all educated persons must some day learn, how to measure

their own understanding, how to know what they know or do not

know.

1. What is the best title of the passage?  ( Please answer within 10 words. )

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2. What is the best way for children to leam things?  ( Please answer within 10 words. )

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3. According to the writer,what should teachers do in school? ( Please answer within 10 words. )

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4. Translate the underlined sentence in the first paragraph into Chinese.

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5. Which sentence in the passage can be replaced by the  following one?

    However, in school we always tell children what's wrong and tell them how to correct them.

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