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【判断题】
任何情况下，某个关系的外键的取值除了可以取它所参照的主键表中的某个主键值外，都可以取空值。A.
正确
B.
错误
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举一反三
【单选题】There a lot of farmland here. But now you can only see tall buildings.
A.
used to have
B.
is used to being
C.
used to having
D.
used to be
【多选题】GQPS-478 一份完整的培训项目实施计划应包括:培训目的:培训目标:培训对象及类型:培训内容;培训的组织范围;培训规模:培训时间;培训地点:( )。
A.
培训的方式、方法
B.
培训教师
C.
考评方式
D.
经费投入
E.
培训效益、效果的预期
【单选题】Were there a lot of people at the lecture?
A.
Yes, there was a big audience.
B.
No, only one-third of the seats were occupied.
C.
Yes, buy nearly 30% left after the short rest.
【单选题】There a lot of _______. in the park.
A.
is, child
B.
are , childs
C.
are, children
D.
is , children
【简答题】Mr. Jackson lived in the center of London but he had a hotel near the airport. There a lot of foreigners stayed for night. He didn’t know any other language but English and he found it difficult for h...
【单选题】-__________ there a lot of students on the football field? -No, there __________. [ ]
A.
Are, aren't
B.
Is, isn't
C.
Are, isn't
D.
Is, aren't
【单选题】Are there a lot of tall buildings in Shanghai?
A.
Yes，there are.
B.
No ， there aren't.
C.
Yes，they are.
【单选题】There a lot of trees here, but now it has be come desert. [ ]
A.
is
B.
was
C.
used to be
D.
used to was
【单选题】－Why are there a lot of dead fish in the river? －Because they were ______ by the polluted water.
A.
caught
B.
poisoned
C.
burned
D.
protected
【简答题】力量调度的方法一般可分为__________和__________两种。
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