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答案: D 9. —When do we need to pay the balance? —________ September 30. A. In B. By C. During D. Within 解析: by此處意為 “ (時間 )在 ?? 之前 , 不遲于 ” 。 by ????? by s e a , by wa t e r , by l an d ,by r a i l, by airby b i k e , by p l a n e , by s h i p / b o a t,by s p ac e s h i p 名詞前有冠詞 、 物主代詞 、 指示代詞等時用 on/in。 (3)on側(cè)重于與物體表面接觸 , 其反義詞是 beneath。He was ti r e d f r o m th e w o r k .他因工作而疲勞 。 答案: A 14. —Shall I e for the suit on Friday? —You’ d better won’ t be ready ________ can e and collect it next week. A. by B. till C. at D. after 解析: by此處意為 “ (時間 )在 ?? 之前 , 不遲于 ” 。 答案: C 4. —I think he is taking an active part in social work. —I agree with you ________. A. in a way B. on the way C. by the way D. in the way 解析: in a way在某種程度上 。 in表示在范圍之內(nèi); to表示在某范圍之外的地方; on表示 “ 毗 鄰 ”“ 接壤 ” 。 The Great Wall winds its way from west to east, across desert, over mountains, through valleys till at last it reaches the sea. 3. in, on, to在方位名詞前的區(qū)別 。 答案: C 3. Experts have been warning ________ of the health risks caused by passive smoking. A. at a time B. at one time C. for some time D. for the time 解析: for+ some time表示 “ 有一段時間 ” 。 答案: A 15. This year the white ducks are no longer lovely in locals’ eyes, ________ their fear of bird flu. A. except for B. due to C. in case of D. instead of 解析: due to (doing)意