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【单选题】
世界上多数国家都采用以为单位的标准时。关于时间，以下认识不正确的是：A.
所有时区都以格林尼治本初子午线为基础
B.
国际日期变更线的西边要比东边晚一天
C.
许多国家在夏季人为地把时钟拨快一小时，使用夏令时间
D.
全球共分为24个时区，每个时区都有自己的时间
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举一反三
【单选题】The telephone _____ three times in the last hour, and each time it _____ for my sister.
A.
had rung; was
B.
has rung; was
C.
rang; has been
D.
has been ringing; is
【单选题】My sister went to the party and ________ had a good time there.
A.
she
B.
I
C.
her
D.
me
【单选题】Eat less and exercise more if you want to live to a old age.
A.
ripe
B.
mature
C.
perfect
D.
Far
【单选题】Work on it had begun before my sister left. My sister left _________it had begun
A.
after
B.
without
C.
behind
D.
soon
【单选题】Work on it had begun before my sister left. My sister left ______ it had
A.
after
B.
without
C.
behind
D.
soon
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