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【单选题】
在一个源文件f1中定义有全局变量,如:int a;,则处于同一源程序的另一个源文件f2要想使用f1中的a,可以在f2中进行说明,正确的说明方式是( )。A.
int a;
B.
auto int a;
C.
static int a;
D.
extern int a;
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举一反三
【单选题】A: How long can I keep the book?B: ______
A.
Yes. You can keep it.
B.
No. I'm afraid you should return it now.
C.
Three weeks. But you can renew it if you need it for a longer time.
D.
You can take it at any time you want.
【单选题】Our football team keeps winning these days, and hopefully it can _______.
A.
keep it out
B.
keep it away
C.
keep it up
D.
keep it down
【单选题】Can you tell me ___________?
A.
what to keep fit
B.
how to keep fit
C.
keeping fit
D.
to keep fit
【简答题】How can users keep the password in secret?
【单选题】W： How long can I keep the book? M：______________
A.
Yes. You can keep it.
B.
No. I’m afraid you should return it now.
C.
Three weeks. But you can renew it if you need it for a longer time.
D.
You can take it at any time you want.
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