78. The root systems of most flowering perennials either become too crowded, which results in loss in vigor, and spread too far outward, producing a bare center.
(A) which results in loss in vigor, and spread
(B) resulting in loss in vigor, or spreading
(C) with the result of loss of vigor, or spreading
(D) resulting in loss of vigor, or spread
(E) with a resulting loss of vigor, and spread
Choice A misuses which: as a relative pronoun, which should refer to a specific noun rather than to the action of an entire clause.
对于A的解释,这不是一个非限制性定语从句吗,为什么which 不能指前面整个句子?
A is wrong for two reasons:
1)Choice A misuses which: as a relative pronoun, which should refer to a specific noun rather than to the action of an entire clause.
That is to say,"Which" in this sentence modifies the whole clause before it: the action of the root systems of most flowering perennials become too crowded. This kind of use is not allowed in ETS.
2)"and" should be changed to "or" to make the structure
either .. or
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