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【判断题】
头倒立被称为“体式之”，他能够促进血液循环，增加背部、腹部、双腿的力量。A.
正确
B.
错误
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反馈参考答案：
举一反三
【简答题】边际产量曲线为什么在平均产量曲线的最高点与平均产量曲线相交?
【单选题】The news item about the traffic accident is followed by a detailed report made _________.
A.
on the spot
B.
on the location
C.
on the ground
D.
on the site
【单选题】The aim of the report made by University of Wisconsin is to______.
A.
stimulate the American people to donate money
B.
find out the factors that affect America's health
C.
make clear the gap between cities and counties
D.
show the importance of sorting out information
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