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【多选题】
不同总体间的标准差不能简单进行对比，是因为A.
平均数不一致
B.
计量单位不一致
C.
总体单位数不一致
D.
与平均数的离差之和不一致
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举一反三
【单选题】By saying that 'people who held this view attempted to reverse the orthodox view' (in paragraph 1), the author means that those people______.
A.
didn't quite agree to the 'orthodox' view
B.
held an opposite view to the 'orthodox' one
C.
considered the 'orthodox' view unworthy of notice
D.
were faithful supporters of the Soviet foreign policies
【单选题】The government held a special meeting，________ people to contribute more to the victims.
A.
appealing
B.
appealing to
C.
to appeal
D.
to appeal to
【单选题】The 2012 Olympic Games ________ in London appealed to a lot of people across the world.
A.
held
B.
to hold
C.
being held
D.
to be held
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