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【单选题】
球叉式万向节是由主动叉、从动叉、（ ）个传动钢球、中心钢球、定位销、锁止销组成A.
2个
B.
3个
C.
4个
D.
６个
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反馈参考答案：
举一反三
【单选题】( ) ---Do you know where David is? I couldn’t find him anywhere.
A.
-Well. He ______ have gone far. His coat is stll here.
B.
can’t
C.
shouldn’t
D.
mustn’t
E.
might
【单选题】—Do you know where David is? I couldn’t find him anywhere. —Well . He have gone far-his coat’s still here. [ ]
A.
shouldn’t
B.
mustn’t
C.
can’t
D.
wouldn’t
【简答题】在图示电路中,有 个节点,有 支路,有 回路,有 个网孔。
【单选题】What causes the idea about the connection between fossil fuel and body weight according to the passage?
A.
Scholars worry that too much fossil fuel is consumed too fast.
B.
Obese people are not efficient while exploring the fossil fuel.
C.
A healthy world means everybody should keep fit.
D.
The climate change is becoming a major world problem.
【单选题】Which of the following should NOT doctors do when telling the bad news?
A.
To use the patient's language.
B.
To be direct and concrete.
C.
To distance themselves from the patient.
D.
To show empathy for the patient.
【单选题】一Where is David? 一I just saw him in the ______.
A.
lunchroom
B.
lunching room
C.
room of lunch
【单选题】— Do you know where David is? I couldn't find him anywhere. — Well. He _____ have gone far-his coat is still here. [ ]
A.
shouldn't
B.
mustn't
C.
can't
D.
wouldn't
【单选题】—Where is David? —I just saw him in the _____.
A.
lunchroom
B.
lunching room
C.
room of lunch
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