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【多选题】
为数据表创建索引的目的是( ____)，可以在创建表时用( ____)来创建唯一索引。A.
提高查询的检索性能
B.
创建唯一索引
C.
创建主键
D.
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举一反三
【单选题】—What is the meaning of the saying “Whenever you fall, pick something up?” —It tells us to hope even when coming across failure ; try to learn something valuable from it.
A.
look for
B.
call for
C.
take up
D.
give up
【简答题】The saying tells us lifelong learning is important. The teachcer has told us that over and over again. Could you combine the above two sentences into a complex ne with the use of non-restrictive claus...
【单选题】The old saying referred to in the passage tells us that______.
A.
eating apples regularly does lots of good to our health
B.
the apple is the best among all kinds of fruits
C.
apples can take the place of doctors
D.
an apple is a sure cure for illness
【单选题】一般而言,II相反应对代谢的影响其结合后主要作用为
A.
使代谢活化;增加毒物水溶性
B.
B使代谢活化;增加毒物脂溶性
C.
C使代谢解毒;增加毒物水溶性
D.
D使代谢解毒;增加毒物脂溶性
【简答题】The saying tells us lifelong learning is important. The teacher has told us that over and over again. Could you combine the two sentences into a complex one with the use of non-restrictive clause?
【单选题】—What's the meaning of the saying whenever you fall, pick something up? —It tells us to_ __ __hope even when coming across failure; try to learn something valuable from it. [ ]
A.
look for
B.
call for
C.
take up
D.
give up
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