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【单选题】
以下叙述中正确的是A.
在scanf函数的格式串中，必须有与输入项一一对应的格式转换说明符
B.
只能在printf函数中指定输入数据的宽度，而不能在scanf函数中指定输入数据占的宽度
C.
scanf函数中的字符串，是提示程序员的，输入数据时不必管它
D.
复合语句也被称为语句块，它至少要包含两条语句
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反馈参考答案：
举一反三
【单选题】Your prompt reply ____.
A.
will be highly appreciated
B.
will be thanked
C.
is to be thanked
D.
is appreciated high
【单选题】But if you place your order not later than the end of this month, we would ______ prompt shipment．
A.
sure
B.
assure
C.
insure
D.
ensure
【单选题】As your prompt attention to shipment is most desirable to all parties ______ , we hope you will let us have your telegraphic shipping advice without further delay.
A.
concern
B.
concerning
C.
to concern
D.
concerned
【单选题】Your prompt rely().
A.
will be highly appreciated
B.
will be thanked
C.
is to be thanked
D.
is appreciated high
【单选题】Toxic and infectious substances should be classified into ______ of dangerous goods.
A.
Class 2
B.
Class 4
C.
Class 6
D.
Class 8
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