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in his fiftiesB.seventhB.14._________ of the teachers are women in our school. A.C. 【點(diǎn)評(píng)】考查分?jǐn)?shù)表達(dá),注意平時(shí)識(shí)記其表達(dá)規(guī)則。twelves healthy to fall asleep before 10 ,10點(diǎn)之前睡覺(jué)是健康的,因此他在9點(diǎn)睡覺(jué),故答案選A。17.—____________of volunteers will be needed for the 2020 Olympic Games. —Let39。B.tons ofD. 【點(diǎn)評(píng)】此題考查數(shù)詞。secondD.B.D.分子用基數(shù)詞,分母用序數(shù)詞,分子大于1時(shí),分母用復(fù)數(shù)。millions of【答案】 B 【解析】【分析】句意:公司決定花5百萬(wàn)為那個(gè)小村莊的孩子們建一所學(xué)校。millionsmillions of【答案】 A 【解析】【分析】句意:這個(gè)城市市民總數(shù)今年已經(jīng)增長(zhǎng)到了四百萬(wàn)。ninetith 【點(diǎn)評(píng)】考查數(shù)詞。C.The second【答案】 B 【解析】【分析】句意:——你多久和你妹妹去購(gòu)物?——一個(gè)月兩次。fiftieths fifties。hundred。注意hundred和數(shù)字連用時(shí)用單數(shù)。hundred of。s +基數(shù)詞復(fù)數(shù),在某人幾十多歲時(shí),in one39。fifty27.—Hi, Jack! What about playing soccer after school? —I39。a millionmillionC.three fourths;beC.24.About ______ of the earth ______ covered with water, but we have less and less available fresh water. A.B. 【點(diǎn)評(píng)】考查數(shù)詞,注意根據(jù) Li Hua is going to be an elder brother的語(yǔ)境選擇序數(shù)詞的用法。C.D.C.B.21.— I think A Bite of China Ⅲ is not so good as __________. — Oh, I agree with you..A.two hundreds of【答案】 C 【解析】【分析】句意:每年有數(shù)百的游客參觀北京。tourists visiting Beijing every year. A.one一個(gè),two兩個(gè),third第三,three三個(gè)。one【點(diǎn)評(píng)】考查數(shù)詞,注意join sb的用法。eightyfive thousand, six hundred and twentysixC.nine九,是基數(shù)詞;ninth第九,是序數(shù)詞;twelve十二,是基數(shù)詞;twelfth第十二,是序數(shù)詞。nineD.B.A 第七;B 第八;C 第九;D 第十。s fifties在某人五十多歲時(shí);故選D。8 year olds【答案】 A 【解析】【分析】句意:林濤,八歲的男孩,很勇敢并且在地震發(fā)生時(shí)幫助他的同學(xué)從教室里跑出來(lái)。C.故答案選A。根據(jù) Grain Rain 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。thousand和of 連用時(shí)要用復(fù)數(shù),thousands of,成千上萬(wàn)的,固定短語(yǔ),故選B。B. 【點(diǎn)評(píng)】考查數(shù)量的表達(dá)方式以及被動(dòng)語(yǔ)態(tài)。hundreds。 nine【答案】 B 【解析】【分析】句意:——你的女兒多大了 ?——九歲,昨天我們給她過(guò)了一個(gè)特殊的九歲的生日聚會(huì)。Ninth。B. 【點(diǎn)評(píng)】考查分?jǐn)?shù),注意分子是基數(shù)詞,分母是序數(shù)詞,分子大于一,分母加s的用法。Second three5.______ of the students in our school are boys. A.B.million of注意識(shí)記thousand的用法。B. 【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)字時(shí)用基數(shù)詞+million表示幾百萬(wàn);表示非確切數(shù)字時(shí)用millions of數(shù)百萬(wàn)的。mill