【正文】 A.untilC.unless【答案】 D 16．—The air pollution is terrible. —It will be worse ______ we take action to protect the environment.A.unlessC.when【答案】 B 17．You will find it useful to learn to study by yourself _____ you go to college. A.untilC.when【答案】 D 18．They waited ____ it was dark before leaving, ____ they didn39。since。B. asunless。D. because【答案】 B 19．____it rained a lot, we enjoyed our holiday. A.BecauseC.However【答案】 A 20．—My parents are crazy about Running Man. How about your parents? —_________ my dad _________ my mum likes it. Instead, they prefer The Voice of China.A. norB. andNot only。soB.andD.re going to lose the match __________ they improve their skills.A.untilC.as【答案】 A 23．It won39。t be worried. A.B.C.D.ifB.whenD.As soon asWhileUntilBefore【答案】 A 26．—Which sport do you prefer，volleyball basketball? —I prefer volleyball. A.B.C.表示選擇；，表示并列；，表示轉折。 【點評】考查連詞辨析，注意平時識記其詞義，理解句意。ifwhenbeforeunless【答案】 D 【解析】【分析】句意：科學家說，除非我們保護水資源，否則我們將沒有水喝。除非保護水資源，否則我們沒有水喝，所以用unless，故選D。28．— Which show do you prefer, Keep Running or The Reader? — The Reader, of course. ________________ I ________________ my brother likes it.A. andNeither。C. orNot only。A 兩者都；B 兩者都不；C 要么……要么……；D 不僅……而且……。【點評】考查連詞辨析。29．The car looks nice. ______________, it39。HoweverB.s worseC.Besides【答案】 D 【解析】【分析】句意：這輛車看起來不錯。A、然而，B、更糟的是，C、即使，D、此外，根據(jù)上文The car looks nice和下文 it39。 【點評】考查連詞辨析，注意識記連詞的詞義，理解句意。ifB.that【答案】 A 【解析】【分析】句意：——不好意思，我想知道飛機能否準時著陸。讓我看看。 【點評】考查賓語從句，注意連詞if的用法。m sorry I39。because they have the same color. —It doesn39。at onceby mistakein generalas well【答案】 B 【解析】【分析】句意：——很抱歉我錯拿了你的詞典因為它們顏色相同。at once立刻，馬上；by mistake錯誤；in general通常；as well也?？芍清e拿了詞典，故選B。根據(jù)上下文的聯(lián)系確定所使用的連詞短語。whathowwhywhere【答案】 A 【解析】【分析】句意：如果船停在港灣里是安全的，但這不是它被造的目的。A. what什么；B. how怎樣，表方式； C. why為什么，表原因； D. where在哪里，表地點；根據(jù)but的表達的句意轉折，可知造船的目的不是為了安全地停在港灣，由此推斷空格是表目的，for what=why，故選A。根據(jù)上下文的聯(lián)系確定所使用的連詞。whether, visitingthat, a visitthat, travellingwhether, travel【答案】 B 【解析】【分析】句意：我從不懷疑這個公園值得參觀。 【點評】考查賓語從句。注意固定短語be worth+名詞的使用。t leave here _______________ I finish it. A.untilC.；；。 【點評】考查連詞辨析，注意知己固定搭配not…until的用法。s difficult to make it to the top, I still want to have a try. A.B.C.D.because因為，引導原因狀語從句；as soon as一……就……，引導時間狀語從句；before在……