OG11-19, -23

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. attempt to metabolize, or render harmless, the chemical irritant

The best choice is E, 但我弄不懂"render harmless, the chemical irritant"的意思.

23. Of all the possible disasters that threaten American agriculture, the possibility of an adverse change in climate is maybe the more difficult for analysis.

A. is maybe the more difficult for analysis

B. is probably the most difficult to analyze

C. is maybe the most difficult for analysis

D. is probably the more difficult to analyze

E. is, it may be, the analysis that is most difficult.

答案是B, 但我觉得应该是is probably the most difficult to be analyzed, 为什么是to analyze呢?

我试着帮忙回答一下吧。

19题，“, or render harmless, ”做补足语，把它去掉的话句子就更好理解了

attempt to metabolize the chemical irritant，这里面irritant后置形容chemical。

翻译出来，就是“尝试使刺激性化合物新陈代谢，或者使其无毒”

23题，这是it is difficult to do sth是一个固定用法，可以认为中间省略了 for sb.

补全的话it is difficult （for sb.)to do sth.

错了请指正。

sth is probably the most difficult to analyze

to analyze sth is probably the most difficult