题目内容
（请给出正确答案）
A．Sometimes they are unreliable.
B．Obviously they have made a mistake.
C．On the whole they can be trusted.
D．Generally speaking, they are very helpful.
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A．sometimes
B．some times
C．sometime
D．some time
If the pull of the sun equaled the pull of the moon, tides would ______.
A．sometimes be higher than they are now
B．be the same height they are now
C．no longer be affected by the wind
D．be of equal height all the time
It is necessary to occasionally overbook NOT because:
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B.Guests may cancel their reservation.
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D.The restaurant wants to make an impression of being popular and busy.
According to the Los Angeles study, immigrants ______.
A．sometimes help to maintain the existence of some industries
B．sometimes cause employment to fall
C．may lower the wages of natives in general
D．may help promote inflation
Wearing police uniform. is ______important.
A．sometimes
B．always
C．not
D．very
Which of the following is NOT Dr. Horton's point of view？
A．Sometimes science and advocacy conflict each other.
B．The figures will not hinder women health advocates' cause.
C．The current study is more trustworthy and sophisticated.
D．The current study has important positive findings for global health.
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