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【单选题】
选面积为40m2的马铃薯小区10个，各分成两半，一半去花另一半不去花，若要检验两处理块茎产量的差异显著性，应采用( )的处理方法进行比较。A.
成组数据
B.
卡平方检验
C.
成对数据
D.
u检验
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【简答题】More and more people like bicycling and it is no surprise. It is fun, healthy and good for the environment. Maybe that's why there are 1.4 billion bicycles and only 400 million cars on roads worldwide...
【简答题】Passage Two Questions 51 to 55 are
based on the following passage. In spring, chickens start laying again, bringing
a welcome source of protein at winter’s end. So it’s no surprise that cultures
aroun...
【简答题】阅读理解。 When I was small and my grandmother died, I couldn't understand why I had no tears. But that night when my dad tried to cheer me up, my laughs turned into crying. So it came as no surprise to le...
【单选题】______John should have passed the examination.
A.
It is no surprise that
B.
It is surprised that
C.
That's no surprise that
D.
To surprise me that
【简答题】阅读理解 Sadness is unpleasant, and in a society where personal happiness is prized above all else, there is little tolerance for falling in despair.Especially now we've got drugs for getting rid of sad f...
【简答题】阅读理解。 When I was small and my grandmother died, I couldn't understand why I had no tears. But that night when my dad tried to cheer me up, my laugh turned into crying. So it came as no surprise to lea...
【单选题】In spring, chickens start laying again, bringing a welcome source of protein at winter's end. So it's no surprise that cultures around the world celebrate spring by honoring the egg. Some traditions a...
A.
It is a welcome sign of the coming of spring.
B.
It is their major source of protein in winter.
C.
It can easily be made into a work of art.
D.
It can bring wealth and honor to them.
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