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【单选题】
“先定义后使用”是指_________。A.
在使用常量时必须先用define命令进行定义
B.
在使用常量时必须先用#define命令进行定义
C.
在使用变量时必须先命令计算机为该变量安排相应的存储单元
D.
在使用变量时必须先命令计算机为该变量安排相应的初始值
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反馈参考答案：
举一反三
【单选题】The couple less ______ to each other tend to end up in divorce.
A.
committed
B.
linked
C.
connected
D.
contributed
【单选题】I _____ think the boy _____ afraid of dogs.
A.
/ ;isn’t
B.
don’t; is
C.
don’t; isn’t
D.
don’t; are
【单选题】Some hosts don’t want dogs in their homes because _________.
A.
dogs may bite others
B.
their children are allergic to dog’s hair
C.
dogs often make a mess
D.
the sofa and carpet may get stained
【单选题】We' d like to clear up some points ( )with the technical part of the contract.
A.
connected
B.
connect
C.
connecting
D.
being connected
【单选题】Why does the woman think people can't have dogs in their apartments?
A.
As her host mother doesn't like dogs.
B.
As dogs are really small.
C.
As their apartments are tiny.
D.
As there are too many dogs around the city.
【单选题】Both bus and tree topologies are characterized by the use of multipoint().
A.
medium
B.
connection
C.
token
D.
resource
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