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【单选题】
以下关于外部变量和外部函数的说法,错误的是A.
外部变量的声明可以是引用性的声明
B.
静态变量和静态函数即使用来extern声明，它们的使用范围仍然被限定在定义文件中
C.
外部变量可以为多个源文件所共享
D.
外部函数和外部变量在声明时，都不能省略关键词extern
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反馈参考答案：
举一反三
【单选题】--It's so hot today. --It's true. It's _______ yesterday.
A.
two degrees hotter than
B.
two degrees as hot as
C.
two degree hotter than
D.
as two degrees hot as
【单选题】— What a day! It is quite hot today. — _____. Let's go swimming. [ ]
A.
So it is
B.
So is it
C.
So it does
D.
So does it
【单选题】Seeing emerging adulthood as a normal stage of life can help ____ our anxiety.
A.
ease
B.
relax
C.
relieve
D.
weaken
【简答题】设函数y=f( )，其中f(u)为可导函数，则 （ ）
【单选题】Seeing emerging adulthood as a normal stage of life can help ____our anxiety.
A.
ease
B.
relax
C.
relieve
D.
weaken
【单选题】听力原文：M: It's so hot today. I simply can't work. I wish there was a fan in this room. W: So do I. 1'11 fall asleep if I stay here any longer. M: Let's go outside. What are the man and woman complaining...
A.
The size of the room.
B.
Long working hours.
C.
The hot weather.
D.
The fan in the room.
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