标题: 平行结构一问？ [打印本页] 作者: ala 时间: 2003-2-28 16:21 标题: 平行结构一问？
6. In virtually all types of tissue in every animal species, dioxin induces the production of enzymes that are the organism's trying to metabolize, or render harmless, the chemical that is irritating it.A. trying to metabolize, or render harmless, the chemical that is irritating itB. trying that it metabolize, or render harmless, the chemical irritantC. attempt to try to metabolize, or render harmless, such a chemical irritantD. attempt to try and metabolize, or render harmless, the chemical irritating itE. attempt to metabolize, or render harmless, the chemical irritantAlthough an "-ing" verb such as trying can sometimes be used as a noun, the phrase the organism's trying to metabolize in A is unidiomatic because trying is used as the object of organism's. In B, trying that it metabolize is ungrammatical. The noun attempt could follow organism's; also, it would parallel the noun enzymes, and parallelism is needed here because the sentence uses the linking verb are to equate enzymes and attempt. In C and D, however, attempt to try is redundant. Choice E, which says attempt to metabolize, is best. The phrase the chemical irritant is also the most concise and precise conclusion for the sentence because it clearly refers to the dioxin mentioned earlier.
