prep 2-20The human nervous system and a telephonesystem superficially resemble each other, not only
because the former carries information inthe form of electrical impulses and because all of its
neural pathways converge in the brain andspinal cord, which together form a kind of central
exchange.
(A) The human nervous system and atelephone system superficially resemble each other, not only
because the former carries
(B) The human nervous system and atelephone system bear a superficial resemblance because
(C) The human nervous system bears asuperficial resemblance to a telephone system both
because the former carries
(D) Superficially, a telephone systemresembles the human nervous system both because they
(E) There is a superficial resemblancebetween a telephone system and the human nervous system,
not only because they both carry
正确答案为C。我的疑问在于B答案。
疑问一：prep解释说B的they无指代对象，这里they不能指代the human nervous system and a telephone system么。
疑问二：both必须和and连用么。both不能不能单独表示“都”这个意思么。比如举例说，James and Sandy both like apple。
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发表于 2011-8-24 16:27:30
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