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【简答题】
数列1，2，2，3，3，3，4，4，4，4，5，5，5，5，5，6，…的第1000项是______．
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反馈参考答案：
举一反三
【单选题】一种商品的需求曲线向右下方倾斜,如果生产该种商品的生产要素价格上升,那么( )
A.
均衡数量增加，均衡价格上升
B.
均衡数量增加，均衡价格下降
C.
均衡数量减少，均衡价格上升
D.
均衡数量减少，均衡价格下降
【单选题】How long has the conference _____? For half an hour [ ]
A.
finish
B.
end
C.
over
D.
been over
【单选题】The course about Chinese food attracts over 100 students per year, ________ up to half are from overseas.
A.
in which
B.
for whom
C.
with which
D.
of whom
【简答题】Each day, over half of American children eat fast food.
【简答题】A．Over an hour. B．Half an hour. C．Less than half an hour. D．Less than an hour.
【单选题】The EU is discussing economic reform. The EU accounts for over half Britain's exports.
A.
The EU, which accounts for over half Britain's exports, is discussing economic reform.
B.
The EU which accounts for over half Britain's exports is discussing economic reform.
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