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【单选题】
Why does the professor say this:A.
To provide an example of the topic.
B.
To answer a student's previous question.
C.
To show that a popular idea is not true.
D.
To explain how people understand art.
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反馈参考答案：
举一反三
【单选题】有一批连杆模锻件，经金相检验，发现其纤维不连续，分布不合理。为了保证产品质量应将这批锻件( )。
A.
进行再结晶退火
B.
进行球化退火
C.
重新加热进行第二次锻造
D.
报废
【单选题】Most people thought that these competitors didn't ______ their prizes because they cheated in the competition.
A.
conserve
B.
preserve
C.
deserve
D.
observe
【单选题】_____relieved the people most was that it wasn’t long _____the victims in the earthquake were saved by the soldiers.
A.
What…that
B.
What…before
C.
What…since
D.
That… before
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