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【单选题】
下列关于视图的说法中哪个是正确的A.
视图是将基本表中的数据检索出来后重新组成的一个新表
B.
视图是一种虚表,本身保存的只是视图的定义,查看视图数据时,SQL Server将其定义转换为相应的select语句,然后进行检索并显示结果
C.
通过视图可以修改多个基表的数据
D.
对任何视图都可以通过该视图修改基表的数据
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【单选题】Mary looks ________ fifteen shops, but she doesn't ________. [ ]
A.
into; shopping
B.
out of; shop
C.
for; shopping
D.
in; shop
【单选题】According to the passage, a 'hygiene factor' (line 13) is an aspect of a worker's performance that ______.
A.
has no effect on the rating of a worker's performance
B.
is so basic to performance that it is assumed to be adequate for all workers
C.
is given less importance than it deserves in rating a worker's performance
D.
if not likely to affect a worker's rating unless it is judged to be inadequate
【单选题】The shop doesn’t open until 11 am, _______ it loses a lot of business.
A.
for
B.
or
C.
but
D.
so
【单选题】The shop doesn't have air conditioners in ______ at the moment, but they expect to have some in a week.
A.
stock
B.
storage
C.
sale
D.
demand
【简答题】There are many similarities between the teacher’s work and the actor’s. However, the fact that a good teacher has some of the gifts of a good actor __1__ mean that he will indeed be able to act well o...
【简答题】The shop doesn’t open__________11 a.m. A．for B．or C．but D．until
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