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【单选题】
本地变量的概念错误的是( )。A.
本地变量可以定义在函数的{ }内
B.
本地变量可以定义在语句的{ }内
C.
块外定义的本地变量块内无效
D.
本地变量可以定义在任意一对{ }内
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皮皮学刷刷变学霸
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【简答题】电子商务系统的基础是()。 A决策支持系统 B电子数据交换 C商业信息系统 D财务信息系统
【单选题】听力原文：W: Hi, Xiao Wang. What are you going to do this weekend? M: I've no idea. What about you? W: How about going out for some exercises? M: Good idea! W: Do you like to play tennis? M: You've just fo...
A.
Hobbies.
B.
Weekend arrangements.
C.
Table tennis.
D.
Tennis.
【多选题】How do we play table tennis?
A.
allow a ball played toward them to bounce one time on their side of the table
B.
return it so that it bounces on the opposite side at least once
C.
spinning the ball to limit the opponent's options
【简答题】根据短文内容，回答问题。 Lessons start at two o'clock in the afternoon. There are two lessons. We have history and chemistry. I like chemistry. It's my favourite lesson. After class, we do activities on the playg...
【单选题】Shortly after we ______, a waiter came over to our table with a smile.
A.
seated
B.
were seated
C.
sat ourselves
D.
took places
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