【正文】 用單數(shù)形式；故選A。40．—We can’t be successful ________ we keep working hard. —I agree with you.A．if B．unless C．because D．when【答案】B【解析】【詳解】句意：——除非我們堅(jiān)持努力工作，我們不能成功?！?—我同意你。考查連詞。；；；……時(shí)候，由于。根據(jù)句意可知選B。41．—Excuse me. Is it my turn now?—Not yet. Please wait on the chair ________ your name is called.A．a(chǎn)nd B．until C．a(chǎn)lthough D．since【答案】B【解析】試題分析：句意：請(qǐng)問，現(xiàn)在輪到我了嗎？還沒有，請(qǐng)坐在椅子上直到叫你。 A. and 和；B. until直到； C. although 盡管；D. since自從。根據(jù)句意故選B?？键c(diǎn)：考查連詞的用法。42．_____ they are very tired, they feel happy because they’ve finally finished their project.A．So B．Although C．If D．But【答案】B【解析】【詳解】句意：盡管他們很累，他們感到高興，因?yàn)樗麄兘K于完成了他們的項(xiàng)目?？疾檫B詞辨析。A. So 因此；B. Although盡管；C. If如果；D. But但是。分析句意可知，他們雖然很累，但很快樂，前半句是讓步狀語從句，用Although。答案選B。43．Did you catch what the teacher said?No. She spoke so fast _______ I couldn’t hear her very clearly.A．which B．that C．when D．since【答案】B【解析】考查從句的連接詞。“你聽懂老師講的了嗎？”“不。她說的那么快以至于我聽得不是太清楚。”so...that...“如此......以至于......”，表示結(jié)果。故選B。44．My grandfather does Chinese Kung Fu every day _________ he is over eighty.A．since B．though C．until【答案】B【解析】句意：我爺爺每天練中國功夫，盡管他80多了。A. since 自從，因?yàn)椋? B. though盡管； C. until直到；根據(jù)My grandfather does Chinese Kung Fu every day和he is over ,盡管；故選B45．When you are in your school dining hall during lunchtime, you may feel lonely _______ you can find someone to have lunch with.A．if B．unlessC．a(chǎn)fter D．because【答案】B【解析】【分析】【詳解】句意：當(dāng)你在學(xué)校食堂吃午飯的時(shí)候，你可能會(huì)感到孤獨(dú)，除非你能找個(gè)人一起吃午飯?？疾檫B詞用法辨析。if如果，unless除非，都表?xiàng)l件；after表時(shí)間，because表原因。本句前后句是條件關(guān)系，可排除CD兩項(xiàng)。根據(jù)句意可知if不合句意，故選B。46．It was the middle of the night _____the sound of the piano woke me up.A．because B．if C．when D．a(chǎn)lthough【答案】C【解析】【詳解】句意：正是半夜鋼琴聲把我吵醒了。A. because因?yàn)椋籅. if如果；C. when 當(dāng)……的時(shí)候；D. although盡管，雖然。根據(jù)下文the sound of the piano woke me 。根據(jù)題意，故選C。47． Talk to your teacher and you will get help ________ you have a problem.A．unless B．ifC．until D．so【答案】B【解析】試題分析：unless除非，如果不； if是否，如果；until直到；So因此。句意：如果你有問題，給你的老師說說，你就會(huì)得到幫助。故選B?？键c(diǎn)：考查連詞辨析48．Helendidn39。tknowanythingaboutit_______herfathertoldher.A．if B．because C．a(chǎn)fter D．until【答案】D【解析】【詳解】句意：直到她的父親告訴她，她才知道關(guān)于它的一些事情?？疾檫B詞辨析。if是否，如果；because因?yàn)?；after在......之后；until直到。短語not ...until...意為“直到......才......”,故選D。49． the journey was tiring，Jeff thought it was worth both the time and the money.A．As B．Since C．Unless D．Although【答案】D【解析】【詳解】句意：雖然旅途很累，杰夫認(rèn)為時(shí)間和金錢都值得。A. As當(dāng)……的時(shí)候；B. Since 自從；C. Unless除非；D. Although盡管。根據(jù)下文Jeff thought it was worth both the time and the ，這里用Although引導(dǎo)。根據(jù)題意，故選D。50．—Jack, remember ______ off the lights when _______your bedroom.OK, I won’t forget, Mom.A．turning。 leaving B．to turn。 leave C．turning。 left D．to turn。 leaving【答案】D【解析】【詳解】句意：——杰克，記得離開臥室時(shí)把燈關(guān)掉?！冒?，媽媽，我不會(huì)忘記的?？疾榉侵^語動(dòng)詞。上一句句意：杰克，離開臥室時(shí)記得關(guān)燈。remember to do （未做）；remember doing （已做）。when doing 。故選D。