题目内容
(请给出正确答案)
[单选题]
They _________ the Summer Palace tomorrow afternoon.
A.are going to
B.visited
C.ave visited
D.visit
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A.are going to
B.visited
C.ave visited
D.visit
A.P(S)、V(S)和V(S)
B.P(S)、P(S)和V(S)
C.V(S)、V(S)和P(S)
D.V(S)、V(S)和P(S)
已知char**s,下面正确的语句是()。
A)s="ABCDEF";
B)*s="ABCDEF";
C)**s="ABCDEF";
D)*s='A';
A.1000bit/s
B.5000bit/s
C.8000bit/s
D.10000bit/s
若要撤销数据库中已经存在的表S,可用()。
A.DELETE TABLE S
B.DELETE S
C.DROP S
D.DROP TABLE S