1. If you can't give up smoking completely, at least try to ________.

A. take down

B. turn down

C. cut down

D. set down

2. The energetic ultraviolet radiation is ______ to life since it tends to break up the complicated molecules on which life depends.

A. indissoluble

B. indolent

C. indiscreet

D. inimical

【考博英语长难句翻译】

But because hard laughter is difficult to sustain, a good laugh is unlikely to have measurable benefits the way, say, walking or jogging does.

考博英语每日一练（11.12）参考答案

1.C

【句意】如果你不能完全戒烟，至少试着减少抽烟。

【解析】词组辨析。take down“（从高处）取下；拆除；记下”；turn down“拒绝；调低（音量或热度）”；cut down“减少；砍倒”；set down“制定；把……写下来”。由句中关键词“can't give up smoking completely不能完全戒烟”与“at least至少”的对应知“减少”符合语境，故C项正确。

2.D

【句意】高能紫外辐射对生命是有害的，因为它倾向于分解生命赖以生存的复杂分子。

【解析】形容词词义辨析。indissoluble“不能分解的；不能溶解的；坚固的”；indolent“懒惰的；[医]无痛的”；indiscreet“轻率的；不慎重的”；inimical“敌意的；有害的”。由关键词“it tends to break up the complicated molecules on which life depends它易于分解生命所依赖的复杂分子”知“有害的”符合，由此知D项正确。

【考博英语翻译参考答案】

但是，由于大笑难以持续，所以一次大笑不太可能像散步或慢跑那样带来显著的益处。