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有although有這種含義,后面引導一個讓步狀語從句,故答案選D。24.—I’m busy with my schoolwork these days.—That’s great! You won’t get good grades ______ you work hard.A.if B.becauseC.unless D.a(chǎn)fter【答案】C【解析】試題分析:句意:這些天我忙著學校工作。那太好了,除非你努力工作,否則你不會取得好成績。A. if如果; B. because因為; C. unless除非; D. after在……之后,根據(jù)句意此題選C。考點:考查連詞的用法25._______ you use your dictionary often, your spelling will improve.A.Whether B.IfC.Though D.While【答案】B【解析】試題分析:Whether是否;If是否,如果;Though 雖然,盡管;While 然而,當……時。句意:如果你經(jīng)常使用詞典,你的書寫會很快提高的。結合語境可知選B。考點:考查連詞辨析26.Eddie was sleeping _______ Millie was reading a magazine.A.until B.while C.before D.a(chǎn)fter【答案】B【解析】【分析】【詳解】試題分析:句意:埃迪在睡覺,同時米莉正在讀一本雜志。until直到;while當……的時候,同時;before在……之前;after在……之后。while前后連接兩個進行時態(tài)的句子。所以選B。27. Laura opened the door and rushed into the rain _______ I could stop her.A.until B.a(chǎn)fter C.before D.unless【答案】C【解析】試題分析:句意:蘿拉打開門,在我能阻止她之前她沖進了雨中。A. until直到……; B. after在……之后;C. before在……之前;D. unless除非,rush into沖進,根據(jù)對句子的分析,可知在我能夠阻止她之前,她沖進了雨中,故選擇C??键c:考查介詞的用法。28.There are fewer and fewer tigers in India. The situation will continue _______ humans stop hunting them for their fur and bones.A.if B.unless C.because D.since【答案】B【解析】試題分析:句意:印度有越來越少的老虎。如果人類不停止為了虎皮和虎骨獵殺老虎,情況會繼續(xù)。,表示條件;,表示相反的條件;,表示原因;,表示時間的起點;既然,表示原因。“如果不”停止,情況會繼續(xù)。故選B??键c:考查連詞的用法29.—Did you catch the early bus this morning? —Yes. The bus started to move _ I got on it.A.though B.before C.a(chǎn)s soon as D.a(chǎn)s if【答案】C【解析】句意:你今天早上趕上早班車了嗎?——是的。我一上車,車就開動了。though盡管,引導讓步狀語從句;before在……之前,不符合對話的意思;as soon as一……就;as if猶如,好像。結合下面的回答Yes,說明說話人趕上了早班車,所以選C。30.Mrs. White walks a dog in the park nearby every morning it’s rainy or windy.A.since B.because C.unless D.until【答案】C【解析】試題分析:句意:如果不刮風下雨,懷特夫人就會帶狗到附近的公園散步。A.. since自從;B.. because因為;C.. unless如果不;D. .until直到……才。結合句意,故選C考點:考查連詞的用法。