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often starts in April ,可知四月份是一年中的第四個(gè)月,要用序數(shù)詞fourth,故選B。根據(jù)語境和生活常識(shí),選擇正確的序數(shù)詞。Two fifths, isSecond fifths, areSecond fifths, isTwo fifths, are【答案】 D 【解析】【分析】分?jǐn)?shù)的構(gòu)成 分子用基數(shù)詞,分母用序數(shù)詞,當(dāng)分子大于一時(shí),分母用復(fù)數(shù)。 【點(diǎn)評(píng)】此題考查分?jǐn)?shù)和主謂一致。9.—Which month of the year do you like best? — July, the _________ month, because summer vacation begin in this month.A.B.C.D.因?yàn)樵谶@個(gè)月暑假開始了。根據(jù)常識(shí)可知七月是一年中第七個(gè)月,所以用序數(shù)詞seventh,故選C。10.We are proud of our country. The year 2019 is her ____ birthday. A.the seventyC.seventieth【答案】 D 【解析】【分析】句意:我們?yōu)槲覀兊膰?guó)家感到驕傲。表示幾歲的生日,要用序數(shù)詞,因此排除A、B;又因前面有物主代詞her,因此不用加定冠詞,故選D。11.Most of the doctors in this hospital were born ________, and they are ________now. A. in their fiftiesB. in the fiftiethC. in fiftiethin the 1970s。in the+四位數(shù)的整數(shù)復(fù)數(shù)形式,在……世紀(jì)……年代,in one39。 【點(diǎn)評(píng)】考查數(shù)詞,注意表示世紀(jì)和年齡的用法。8yearoldB.8yearsoldD.數(shù)量詞在句中作前置定語,注意量詞用單數(shù),并且?guī)нB字符號(hào),故選A。13.______ should not be allowed to go out at night. A.B.C.D.數(shù)量詞作定語應(yīng)用連字符,并且量詞用單數(shù),故選B。14.When Huawei P20 came out, ______ people couldn39。thousandthousandsthousand ofthousands of【答案】 D 【解析】【分析】句意:當(dāng)華為P20上市時(shí),成千上萬的人迫不及待地想在我們鎮(zhèn)上買一臺(tái)。 【點(diǎn)評(píng)】考查整數(shù)的表達(dá)。15._______, when Marx was already _______, he found it was important to study the situation in Russia, so he began to learn Russian. A.In 1870s, in fiftiesC.D.in the 1870s十九世紀(jì)七十年代;in one39。 【點(diǎn)評(píng)】考查時(shí)代的表達(dá)方式和固定短語。16.of the teachers in our school is 118, ______of them are women teachers A.The number,one fourthC.D.the number of...謂語動(dòng)詞單三式,a number of...謂語動(dòng)詞復(fù)數(shù)形式,根據(jù)is排除C和D選項(xiàng),one fourth,固定搭配,4分之1,分子用基數(shù)詞分母用序數(shù)詞 , 故選B。17.There were about six___________ students in the school building during the earthquake. A.B.C.D.hundred,百,基數(shù)詞,表示具體的數(shù)量,其前要用基數(shù)詞;hundreds of +可數(shù)名詞復(fù)數(shù),表示不確定的數(shù)量,固定短語?!军c(diǎn)評(píng)】考查基數(shù)詞hundred的用法。18.The headmaster39。floor. A.twoC.three【答案】 C 【解析】【分析】句意:校長(zhǎng)的辦公室在三樓。根據(jù)句意可知,此處需要填入的意義為第三層,故應(yīng)該用序數(shù)詞,故選C。19.—Have you hea