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  3. Some scientists argue that carbon compounds play such a central role in life on

Some scientists argue that carbon compounds play such a central role in life on

游客2025-02-21  53
问题 Some scientists argue that carbon compounds play such a central role in life on Earth because of the possibility of______resulting from the carbon atom’s ability to form an unending series of different molecules.
选项 A、diversity
B、deviation
C、variety
D、reproduction
E、stability
答案 A，C
解析 The key phrase that indicates how the blank for this question should be completed is "the ability to form an unending series of different molecules." Among the answer choices, "diversity" and "variety" clearly fit logically with "unending" and "different" and create two very similar sentences. No other pair of choices here would produce two sentences as similar in meaning as those created by placing "diversity" and "variety" in the blank. Thus, the correct answer is diversity(Choice A)and variety(Choice C).
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