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The end of the eighteenth century saw the emergence of prize-stock breeding, with individual bulls and cows receiving awards, fetching unprecedented prices, and excited enormous interest whenever they were put on show. (A) excited (B) it excited (C) exciting (D) would excite (E) it had excited
答案C，但是没看懂这个句子的结构，主语是什么？the end of the eighteenth century?? 谢谢各位！ 19.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 it (B) trying that it metabolize, or render harmless, the. chemical irritant (C) attempt to try to metabolize, or render harmless, such a chemical irritant (D) attempt to try and metabolize, or render harmless, the chemical irritating it（E） (E) attempt to metabolize, or render harmless, the chemical irritant 答案E，同样，整个句子没看明白， 尤其是答案中the chemical irritant是做什么的？修饰什么？ 
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发表于 2007-11-23 20:54:00
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