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【单选题】
遗传学最主要的研究任务是A.
遗传和变异
B.
生命起源
C.
生物进化
D.
基因突变
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举一反三
【单选题】There are many supermarkets in this town, but we think this is _______ of all.
A.
good
B.
well
C.
better
D.
the best
【单选题】—What do you think of genetically modified food (转基因食品)? —We all think ______ is careless ______ some scientists to say it is safe before doing any experiment.
A.
that, for
B.
it, for
C.
it, of
D.
that, of
【简答题】. With all factors ______, we think this program may be better than all he others n achieving the goal A, being considered B. considering C. are considered D . Considered
【简答题】红细胞膜的渗透脆性是指红细胞膜对 的抵抗力。
【简答题】We all think that Mary’s husband is a very boring person.
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