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江苏省溧阳市2017高考英语单项选择训练（4）及答案 Ⅰ.单项填空 1．Scientists are convinced ________the positive effect of laughter ________physical and mental health. A．of；at B．by；in C．of；on D．on；at 答案 C [句意：科学家们坚信笑对身心健康有积极影响。be convinced of坚信，深信；effect常与on连用，意为“对……的影响”，固定搭配。] 2．They are against the proposal，for it ________too much farmland. A．puts up B．takes up C．gives up D．makes up 答案 B [句意：他们反对这项提议，因为它占用了太多的耕地。take up“占据，从事”，符合语意。] 3．He has made much progress lately，________pleases his parents greatly. A．when B．where C．which D．that C [本题考查非限制性定语从句。which指代前面整个句子的内容，在非限制性定语从句中作主语。句意为“他最近取得了很大进步，这让他的父母很高兴”。] 4．Yang Liwei was picked from the 14 candidates for the Chinese space adventure and | 
