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【单选题】
简易颈椎操的预备姿势为A.
头部正直，双眼平视前方，身体直立，双脚分开同肩宽，双臂自然下垂于身体两侧，然后按节拍锻炼
B.
坐位或立位，两臂自然下垂
C.
两脚开立，与肩同宽，两手叉腰
D.
直立位，两脚开立与肩同宽，双手叉腰，拇指向后
E.
以上均不正确
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反馈参考答案：
举一反三
【简答题】微型计算机诞生于第几代？
【单选题】What is the main problem?
A.
He doesn't know what color his friend likes in a gift.
B.
His friend has a broken knapsack.
C.
The gift he wants isn't there.
D.
He doesn't know what his friend will find useful in a gift.
【单选题】In the ________ of the race between the tortoise and the hare, the tortoise wins, even though he is slow, because he keeps going with determination.
A.
fable
B.
tale
C.
story
D.
saga
【单选题】若运行时为变量x输入12，则以下程序的运行结果是#includevoidmain(){intx,y;scanf("%d",&x);y=x>12?x+10:x-12;printf("%d\n",y);return0;}
A.
4
B.
3
C.
22
D.
0
【简答题】Mark Twain was an American writer.One day he went to a city by train.He wanted to see one of his friends there.He was a very busy man.He usually forgot something.When he was in the train, the conducto...
【单选题】When he heard the _______ news that an earthquake occurred in Sichuan, he felt very___________.
A.
frightened; frightened
B.
frightened; frightening
C.
frightening; frightening
D.
frightening; frightened
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