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【单选题】
Which of the following is NOT true with Mr. Reginald Page? ( )A.
Mr. Page is going to retire very soon.
B.
While working as a headmaster, Mr. Page is very much interested in gardening.
C.
Mr. Page has been teaching for the greater part of his life.
D.
Mr. Page thinks that no one is too old to learn.
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举一反三
【简答题】A．The seat is not occupied. B．The seat is already reserved. C．A book is under the seat. D．A book is on the seat.
【单选题】关于带谓词的子查询以下说法正确的是 ( )。
A.
带EXISTS或NOT EXISTS谓词的子查询都能被其它形式的子查询等价替换
B.
所有带IN谓词、比较运算符、ANY和ALL谓词的子查询都能用带EXISTS谓词的子查询等价替换
C.
使用存在量词NOT EXISTS后,若内层子查询结果为非空,则外层的WHERE子句返回真值,否则返回假值。
D.
使用存在量词EXISTS后,若内层子查询结果为空,则外层的WHERE子句返回真值,否则返回假值。
【单选题】It is the driver's responsibility to ______.
A.
make the front seat passenger wear a seat belt
B.
make the front seat children under 14 wear a seat belt
C.
stop children riding in the front seat
D.
wear a seat belt each time he drives
【单选题】what kind of seat will be option for you,when you are choosing a seat.
A.
aisle seat
B.
window seat
C.
middle seat
D.
good seat
【单选题】in子查询返回结果是(),比较子查询返回结果是(),exists子查询返回结果是()。 (1)一个集合 (2)产生一个逻辑值true或者false (3)一个值
A.
（1）（2）（3）
B.
（3）（2）（1）
C.
（2）（1）（3）
D.
（1）（3）（2）
【单选题】It is the driver's responsibility to ______.
A.
make the front seat passengers wear a seat belt
B.
make the front seat children under 14 wear a seat belt
C.
stop children riding in the front seat
D.
wear a seat belt each time he drives
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