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【单选题】
以下哪种情况不是食品中致癌物的主要来源A.
食品在一定储存条件下自身发生变化而合成
B.
食品在进入人体后通过代谢产生
C.
食品本身含有的天然成分
D.
食物受污染产生或含有致癌物
E.
食品在加工烹调过程中产生
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皮皮学刷刷变学霸
举一反三
【单选题】While having lunch with a friend recently, we got into a _____ that is pretty frequent in China about morning greeting.
A.
conversation
B.
conservation
C.
reservation
D.
criterion
【单选题】In order to ________ the disease, the first thing we should do is to do research about it and find out a satisfactory cure.
A.
confirm
B.
conduct
C.
control
D.
confuse
【简答题】Who is the fax sent to? It is sent to
【单选题】We should do more such exercises in the future，I think，_____ those we did yesterday.
A.
as
B.
like
C.
about
D.
than
【单选题】We must put _____ into practice.
A.
that we have learned
B.
what we have learned
C.
that have we learned
【简答题】细胞和组织的酸性物质或结构与硷性染料亲合力强者，称（）；而硷性物质或结构与酸性染料亲合力强者，称（）；若与两种染料的亲合力均不强者，称（）。
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