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【单选题】
C语言中允许缺省的函数返回类型。该缺省的函数返回类型是( )。A.
float
B.
double
C.
char
D.
int
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举一反三
【单选题】Which of the following situations is among the troubles print has?
A.
It is dear to find printed materials.
B.
Frequent editing is needed for better layout.
C.
Paper is passed around quickly.
D.
The space to restore articles is not enough.
【单选题】听力原文：W: The hat is beautiful and the color is nice. How much is it? M: The original price was seventy, but we have cut it down by twenty percent. Q: How much is the hat? (18)
A.
14.
B.
17
C.
20.
D.
56
【单选题】According to Philip Bradley, Wikipedia is not authoritative because ______.
A.
it is not printed and published
B.
nobody has to rely on it for a livelihood
C.
the data is not reliable as nobody has to ensure that
D.
it all comes out of the window
【单选题】Which of the following is true of consumer surplus? a. It is graphically represented as the area under the equilibrium price and above the supply curve of a good . b. It is t he net gain in economic w...
A.
B.
C.
D.
D
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