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【单选题】
买家需求类别是()。A.
直接需求和潜在需求
B.
直接需求
C.
潜在需求
D.
无需求
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【简答题】People who averaged fewer than seven hours of sleep per night in the weeks before being exposed to the cold virus were nearly three times as likely to get sick as those who averaged eight hours or mor...
【单选题】How many hours of sleep does the woman usually get?
A.
Four.
B.
Five.
C.
Eight.
D.
Ten.
【简答题】改错。要求和上题一样。 Five hours of sleep are not enough.
【简答题】Five hours of sleep are not enough.
【单选题】Sleep: Jerry gets hours of sleep a night. Sometimes he can sleep for a week and then not sleep for two or three or four days.
A.
four or five
B.
four to five
C.
four or six
D.
four to six
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