找准比较对象，根据“怎么样的individuals are better at reproducing 比 怎么样的individual"，是不同individuals之间的比较, 因此比的是 individuals of one genetic composition
那么than后面和其对应选择 ： those of another.
因为根据单复数原则 those指代 individuals； another指代 composition
[Note] (From Ron)
the comparison must be made between individuals of one genetic composition and individuals of another genetic composition. therefore, (a) and (e) are wrong because "that" is singular; we're supposed to be comparing individuals (plural).
(b) and (c) are wrong because "other"/"another" refers to another genetic composition
找准比较对象，根据 reproducing判断，比的是 individuals of one genetic composition
那么than后面和其对应选择 ： those of another.
因为根据单复数原则 those指代 individuals； another指代 composition
[Note] (From Ron)
the comparison must be made between individuals of one genetic composition and individuals of another genetic composition. therefore, (a) and (e) are wrong because "that" is singular; we're supposed to be comparing individuals (plural).
(b) and (c) are wrong because "other"/"another" refers to another genetic composition
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②one...another...固定搭配
one genetic composition-->another
比较两边的内容必须一致。
那么than后面和其对应选择 ： those of another.
因为根据单复数原则 those指代 individuals； another指代 composition
单数 that
the comparison must be made between individuals of one genetic composition and individuals of another genetic composition. therefore, (a) and (e) are wrong because "that" is singular; we're supposed to be comparing individuals (plural).
(b) and (c) are wrong because "other"/"another" refers to another genetic composition
那么than后面和其对应选择 ： those of another.
因为根据单复数原则 those指代 individuals； another指代 composition
the comparison must be made between individuals of one genetic composition and individuals of another genetic composition. therefore, (a) and (e) are wrong because "that" is singular; we're supposed to be comparing individuals (plural).
(b) and (c) are wrong because "other"/"another" refers to another genetic composition
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所以后面的比较对象应该是复数形式，即不能使用that，而是使用those。