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【简答题】
种柄是由胚柄发育而来的。( )
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【单选题】When I came back at midnight she ______ finished.
A.
still hadn ’ t
B.
hadn ’ t still
C.
already hadn ’ t
D.
hadn ’ t already
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A.
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B.
注意引用文献的原创性、代表性、可靠性和科学性
C.
可以罗列文献，但有部分评述的内容
D.
引用文献要忠实文献内容
【简答题】Son’s Help Mr. Lang worked in a factory. As a driver, he was busy but he was paid much. His wife was an able woman and did all the housework. When he came back, she took good care of him and he never ...
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