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【单选题】
下列关于文件相关模块说法错误的是(____)。A.
打开二进制文件应该采用模式' rt '。
B.
可以使用shelve模块进行对象持久化。
C.
通常采用with语句以保证系统自动关闭打开的流。
D.
文件操作可以使用close方法关闭流。
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举一反三
【单选题】Look! There are _____ grazing over there.
A.
two cattles
B.
two head of cattles
C.
two cattle
D.
two heads of cattle
【单选题】Ann is only two years old, so we should ______ her.
A.
look at
B.
look for
C.
look after
D.
look out
【简答题】液体的流动状态用雷诺系数来判断，其大小与管内液体的（）、运动粘度和管道的（）有关。
【简答题】Tables in China are usually round, and the seat facing the door is normally for the host.
【简答题】The two grils look very _________but they are not sisters.
【判断题】Tables in China are usually round, and the seat facing the door is normally for the host.
A.
正确
B.
错误
【简答题】The two girls look alike.
【单选题】It is reported that the police will soon the case of the two missing children.
A.
look after
B.
look out
C.
look into
D.
look around
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