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【點評】考查數(shù)詞和名詞的用法。D.Sixteenyearolds 【點評】考查數(shù)字表達法辨析。B.ThousandThe second【答案】 B 【解析】【分析】句意:——你多久和你妹妹去購物?——一個月兩次。C.數(shù)詞+hundred,幾百,用hundred 的單數(shù)形式,hundreds of,好幾百,不和數(shù)詞搭配,故排除B和D;進入山谷和看見蝴蝶之間是并列關系,因此用when, 當……時,while表對比,until與not連用,if表假設,均不符題意,故選A。D. untilB. when 【點評】此題考查數(shù)詞。 【點評】考查分數(shù)詞的表達法。C.two threes 【點評】考查分數(shù)的表示方法。fourth fifths【答案】 B 【解析】【分析】句意:九年級有300名學生。fourth fivefour fifthsfour fivewith,覆蓋;句子中的water 是不可數(shù)名詞,系動詞要用is,故選B。 are【答案】 B 【解析】【分析】句意:地球的四分之三被水覆蓋,但是我們的淡水資源越來越少。 are is is根據(jù)可數(shù)名詞復數(shù)guests和 at least eight people dead and several others ,而其他幾個人失蹤 ,可知總人數(shù)不確定,因此用固定搭配dozens of,幾十,數(shù)詞的復數(shù)形式+of,表示概數(shù),故選A。C. guests sank in the Tigris River in central Baghdad late on Thursday, leaving at least eight people dead and several others missing. A.as twice much as【答案】 B 【解析】【分析】句意:十年前,我們村子的人口是他們的兩倍。twice as large as21.Ten years ago the population of our village wasD.B. vegetables per person today as they did in 1910. A.20.Americans eatThree fourths【答案】 D 【解析】【分析】句意:世界上四分之三的書報是用英語寫的。C. 【點評】考查固定搭配,注意平時識記。C.Thousand of根據(jù)短語in their forties,在四十多歲,可知比較符合句意,故選A。C.17.—Have you heard of the TwoChild policy? —Of course. And I know many couples have new babies in their ______.A.eightyfive thousand, six hundred and twentysixC. 【點評】考查數(shù)詞和被動語態(tài)。D. invitedB. were invited第一空說明年齡,應使用基數(shù)詞,第二空說明的是第幾個生日,使用序數(shù)詞,故答案是B。 ninthNine。14.—How old is your daughter?— ______. We had a special party for her ______ birthday yesterday.A.D.B. 【點評】考查數(shù)詞,注意表示世紀和年齡的用法。in the 1970s。 in the fiftiethC.12.Most of the doctors in this hospital were born ________, and they are ________now. A.seventy,70,基數(shù)詞;seventieth,第70,序數(shù)詞。birthday on October 1, 2019 around the country. A. 【點評】考查數(shù)詞用法,注意平時識記,理解句意。sixth【答案】 C 【解析】【分析】句意:——你最喜歡一年中哪個月?——七月,第七個月。seventhsixsevenone一;first第一;two二;second第二,根據(jù) Hi, Ted! How was your trip to Mount Huangshan last month? 可知去過一次,不是第一次去,想再去一次,second又一次,故選D。B.one根據(jù) Grain Ra