【正文】 該怎么辦?while 【點評】考查連詞辨析，首先識記連詞詞義，然后根據(jù)句意確定。D.B.火是有用的，但也是危險的，前后句表示轉(zhuǎn)折，所以用but，故選B。 【點評】考查連詞辨析，首先識記連詞詞義，然后根據(jù)句意確定。D.C.B.29．___________ the situation in Iraq is very dangerous, the woman reporter still keeps on working there. A.D.C.B.d better hurry. A.……就……；；；。 【點評】考查連詞辨析?！獩]關(guān)系。because【答案】 C 26．—I39。unless【答案】 D 25．Study hard, _______ our parents will be disappointed. A.howeverD.both…andB.soB.becauseC.Not only。 andwhetherwhen【答案】 B 19．—Mom, I want to be an engineer when I grow up. —Son, your dream will not e true _____ you keep trying your best.A.until【答案】 C 18．—The air pollution is terrible. —It will be worse ______ we take action to protect the environment.A.C.whenand【答案】 C 16．The situation is being more serious ________________ we do something to save the Earth. A.C.舉起手的條件是知道答案，所以用if，如果，故選B。Whether。 rise nor【答案】 B 14．_______________ you know the answer, please _______________ your hand quickly. A.B.Both。very rich非常有錢和后面的doesn39。B.andthoughbecauseC.s surface is covered with water, 97 percent of it is salt water in the sea. A.分析句子可知，這是一個主從復合句，挖空后引導一個條件狀語從句，引導詞應用if，如果，故選A。unless9．Your dream will e true ______________ you put your heart and soul into it. A.while當……時候；though雖然；because因為；unless除非，故選A。8．Love your parents __________ they are alive. Don39。If【答案】 A 【解析】【分析】句意：自從中國加入WTO后，英語就更重要了。WhenThoughSince根據(jù)常識可知在夏天食物放在冰箱才不會馬上變質(zhì)，此處是unless引導的條件狀語從句，故選B。as soon asif 【點評】此題考查連詞辨析。if【答案】 B 【解析】【分析】句意：——你的微信賬號安全嗎？——是的，甚至我父親都不能使用，除非我告訴他密碼。t use it __________ I tell him the password.A. Till【答案】 C 【解析】【分析】句意：——會議會持續(xù)多久？——直到我們達成協(xié)議。C. Not untilwe reach an agreement.A.——哦，我真的很抱歉，那下次呢？根據(jù)只剩下一張票，可知只能去一個人，A兩個都，B兩個都不，C兩者之一，D不但而且，故選B。D.neither。 or rise【答案】 A 3．— Since you have one ticket left, ____ my sister_____ I will go with you. — Oh, I39。 raise rise raisewhens with my daughter. A.t like western food. I seldom eat it ______________ to McDonald39。B.asIf。If。Unless。Unless。 andeither。C.——既然你只剩下一張票，要么我妹妹要么我和你一起去。 When。When。5．—Is your WeChat account （賬戶） safe? —Yes, even my father can39。whileD.故選B。we put it into a fridge. A.C.if 如果；unless除非；as soon as一……就……while當……的時候。7．______________ China has been a member of WTO, English is more important. A.B.C.D.根據(jù)句意確定所使用的連詞。不要等到太遲才行動。弄清每個連詞意思，根據(jù)語境和句意確定所使用的連詞。B.although；；；……為止。10．___________three fourths of the Earth39。AlthoughHowever【答案】 B 11．She got up very