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delayput offpostpone 推迟， 使延期 quickfastrapidprompt 快的，迅速的 positivesurecertain 肯定的， 确定的 favorableprofitablebeneficial 有利的 reactionresponse 反应 surpriseshockamazeastonish 使惊讶 6. he impressed all his colleagues as) a vigorous man in the prime of his career. a)hot-tempered b) healthy c) friendly d) patient 6. b. vigorous的基本词义为精力旺盛的，健壮的， 因此b的词义与之最接近。 careerprofessionoccupation 职业 strikeimpress 留下印象 7. data from voyager ii have presented astronomers with a puzzle about why our outermost planet exists. a) problem b) mystery c) question d) point 7.b. puzzle 在句子中的词性为名词， 其作为名词的基本词义为迷，因此b是答案。 presentgift 礼物 presentintroduce 介绍 problemquestionissue 问题 8. he rolled up his trouser leg to exhibit his wounded knee. a) spread b) open c) show d) examine 8.c. exhibit 在句子中用作动词， 其作为动词的基本词义为展出， 陈列，因此c是答案。 | 
