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19. 答案是C. 20. 答案是C. 本題考查對(duì)習(xí)慣用語的掌握,help oneself to 是固定搭配。 18. 答案是D。in time 除了意為“及時(shí)”外,還可為“遲早”、“總有一天”,相當(dāng)于sooner or later/someday. 17. 答案是B. 本題考查對(duì)介詞與名詞搭配的掌握?! ?5. 答案是D 如果能掌握have trouble in doing something 這一句型,就知道答案了。in 與一段時(shí)間連用表示“…….之內(nèi)”或“……之后”。 14. 答案是C?! ?2. 答案是C. with 可表示原因,意為“因”、“由于”。A和C明顯不符合題意。C項(xiàng)意為 換言之正合題意。本題考查對(duì)幾個(gè)介詞短語的辨析?!霸诖采稀睉?yīng)上in bed。 9. 答案是C。C項(xiàng)意為“開燈”,與該句意思相反。 A but for B in spite of C due to D with regard to 2. Visitors are asked to ply ______ the regulations. A at B in C with D on 3. He ______ so much work that he couldn’t really do it efficiently. A put on B took on C brought on D turned on 4. In order to save time, I ______ my shopping to once a week. A cut off B cut out C cut up D cut down 5. The idea has ______ that science cannot be wrong. A piled up B picked up C grown up