【正文】
Yunnan province, there is a valley famous for its butterflies. You will see over four _______kinds of butterflies flying around ________ you get into the valley. A.hundred。 whenB.hundreds of。 whileC.hundred。 untilD.hundreds。 if【答案】 A 【解析】【分析】句意:在云南省,有一個(gè)以蝴蝶聞名的山谷。當(dāng)你進(jìn)入山谷時(shí),你會(huì)看到有四百多種蝴蝶飛來(lái)飛去。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(jìn)入山谷和看見(jiàn)蝴蝶之間是并列關(guān)系,因此用when, 當(dāng)……時(shí),while表對(duì)比,until與not連用,if表假設(shè),均不符題意,故選A。 【點(diǎn)評(píng)】考查數(shù)詞和連詞,注意根據(jù)You will see的語(yǔ)境選擇合適的用法。26.Alibaba CEO Jack Ma has decided to retire from his pany in his _________. A.fiftyB.fiftiesC.fiftiethD.fiftieths【答案】 B 【解析】【分析】句意:阿里巴巴的總裁馬云已經(jīng)決定在他50多歲從他的公司退休。in one39。s +基數(shù)詞復(fù)數(shù),在某人幾十多歲時(shí),in one39。s fifties,在某人五十多歲時(shí),故選B。 【點(diǎn)評(píng)】此題考查數(shù)詞。注意固定短語(yǔ),in one39。s fifties。27.There are about people in the village. A.eight hundredB.eight hundredsC.eight hundred ofD.eight hundreds of【答案】 A 【解析】【分析】句意:村子里大約有八百人。hundred,百,與基數(shù)詞搭配時(shí),不用復(fù)數(shù)。 ,hundred 后跟of 時(shí),應(yīng)用復(fù)數(shù),前面不能用基數(shù)詞, 故選A。 【點(diǎn)評(píng)】考查數(shù)詞用法。注意hundred,thousand和million等詞的使用規(guī)則。28. of the teachers in our school is 118, ______of them are women teachers A.The number,first fourthB.The number,one fourthC.A number,one secondD.A number,three quarters【答案】 B 【解析】【分析】句意: 我們學(xué)校的教師總數(shù)是118人,其中有4分之1是女教師。the number of...謂語(yǔ)動(dòng)詞單三式,a number of...謂語(yǔ)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。 【點(diǎn)評(píng)】考查分?jǐn)?shù)的表達(dá),注意分子用基數(shù)詞分母用序數(shù)詞表示分?jǐn)?shù)的用法。29.Basketball is so exciting that ______ people play it for fun. A.millionB.two millionsC.millions ofD.millions of【答案】 D 【解析】【分析】句意:籃球是如此令人興奮以至于數(shù)百萬(wàn)人為了玩樂(lè)而打它。表達(dá)確切數(shù)字時(shí)用基數(shù)詞+million,表示幾百萬(wàn);表達(dá)非確切數(shù)字時(shí)用millions of,數(shù)百萬(wàn),故選D。 【點(diǎn)評(píng)】考查數(shù)學(xué)詞的表達(dá),注意平時(shí)識(shí)記確切數(shù)字與非確切數(shù)字的表達(dá)。30._______, 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 his fiftiesB.In 1870s, in fiftiesC.In the 1870s, in fiftiesD.In the 1870s, in his fifties【答案】 D 【解析】【分析】句意:在十九世紀(jì)七十年代,馬克思已經(jīng)五十歲了,他覺(jué)得研究俄國(guó)的形勢(shì)很重要,便開(kāi)始學(xué)習(xí)俄語(yǔ)。in the 1870s十九世紀(jì)七十年代;in one39。s fifties在某人五十多歲時(shí);故選D。 【點(diǎn)評(píng)】考查時(shí)代的表達(dá)方式和固定短語(yǔ)。掌握時(shí)代的表達(dá)方式。