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【单选题】
食品受到寄生虫和其虫卵的污染不属于（ ）。A.
生物性污染
B.
化学性污染
C.
物理性污染
D.
生理性污染
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举一反三
【简答题】You can put the book in in the bag.
【简答题】His latest book has been( severe) put down in the newspaper report .
【单选题】—Why do you always put this book in your backpack? —Because this book _____ my interest in the study of history. [ ]
A.
lifts
B.
raises
C.
takes
D.
carries
【单选题】After Jenny read the letter, she ______ it and put it in her book.
A.
finished
B.
wrote
C.
folded
【简答题】a book that you put photographs, stamps in
【单选题】There is ______ space in the bag. You can put your book in it.
A.
much
B.
many
C.
little
D.
a few
【简答题】蛋白质溶液具有胶体的性质，其分散于水中的颗粒直径约为______nm，使蛋白质溶液稳定的两因素是蛋白质分子表面的______和______。
【单选题】He put the book in the box____ the shelf.
A.
instead
B.
instead of
C.
instead of on
D.
in place of
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