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ce,表示數(shù)量,放在as … as結構前,是……的兩倍多,故選D。D.twice as many asB. vegetables per person today as they did in 1910. A.19.Americans eat橫線后面沒有具體數(shù)字,因此用thousands of,成千上萬的......,故選D。D.ThousandsB.Thousand18.表達確切數(shù)字用基數(shù)詞+hundred,表達非確切數(shù)字用hundreds of,前面沒有具體數(shù)字,因此用hundreds of,故選C。D.hundreds ofB.hundred17.There are 表達確切數(shù)字時用基數(shù)詞+million,表示幾百萬;表達非確切數(shù)字時用millions of,數(shù)百萬,故選D。D.C.B.16.Basketball is so exciting that ______ people play it for fun. A.two,2,是基數(shù)詞,所以用million,故選A。millions of【答案】 A 【解析】【分析】句意:保險公司付給李先生兩百萬美元為了他被偷來的花瓶。C.millions15.The insurance pany paid Mr Li two___________ dollars for his stolen vase. A.分數(shù)詞是分子是基數(shù)詞,分母是序數(shù)詞,分子大于一,分母加s,因此二分之一是two thirds,故選C。D.Two thirdsB.Two three掌握時代的表達方式。s fifties在某人五十多歲時;故選D。In the 1870s, in his fifties【答案】 D 【解析】【分析】句意:在十九世紀七十年代,馬克思已經(jīng)五十歲了,他覺得研究俄國的形勢很重要,便開始學習俄語。In the 1870s, in fiftiesB.In 1870s, in his fifties【點評】考查數(shù)詞,注意定冠詞后是序數(shù)詞的用法。這是我第五次參觀順豐公園,我想第六次去參觀。D.C.B.s the ______ time for me to visit the Shunfeng Park. And I want to visit it a sixth time. A. 【點評】考查數(shù)量詞作定語的用法。Twelve year olds【答案】 B 【解析】【分析】句意:12歲的孩子不應該被允許夜晚出去。Twelve years oldTwelveyearoldsTwelveyearsold 【點評】考查基數(shù)詞的用法,注意表示確切的數(shù)字時,其后不能用百、千的復數(shù)形式。two hundred of【答案】 C 【解析】【分析】句意:從南昌到成都大約有兩百公里。two hundredtwo hundreds oftwo hundreds10.It39。 【點評】此題考查數(shù)詞。他們住在九樓。fifth。five。fifth。five。s family. They live on the9.There are 故答案選A。two hundred fourteen【答案】 A 【解析】【分析】句意:——書架上有多少本書?——嗯,我認為有246本書。B.two hundred and fortysix 【點評】考查序數(shù)詞的基本用法。2019年是她的70歲誕辰。D.the seventiethB.seventy 【點評】考查數(shù)詞用法,注意平時識記,理解句意?;鶖?shù)詞;,基數(shù)詞;,序數(shù)詞;,序數(shù)詞。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。seventhsixseven注意分數(shù)+of+名詞作主語時,謂語動詞的結構。 分數(shù)+of+名詞作主語時,如果名詞是復數(shù),謂語動詞用復數(shù)結構, 故選D。句意:我們班五分之二的學生下周要去北京參加夏令營。D.C.B.of the students in our class _____going to the summer ca