There are _______ days in a year.

A. three hundred sixty-five B. three hundreds and sixty-five

C. three hundred and sixty –five D. two hundreds and sixty-five

C 【解析】句意：一年有三百六十五天。十位數(shù)與個(gè)位數(shù)之間要加連字符號(hào)“-”；百位和十位（若無(wú)十位則和個(gè)位）之間加and，hundred前面有基數(shù)詞時(shí)，hundred要用單數(shù)形式，故答案為C。

---How many teachers are there in your school?

--- __________. , but I'm not sure.

A. Hundreds B. Hundred C. Hundreds of D. One hundred

C 【解析】句意：——你們學(xué)校里有多少個(gè)老師？——一好幾百，但是我不確定。hundreds of表示“好幾百，許許多多”；hundred前有具體的基數(shù)詞修飾時(shí)，要用單數(shù)形式，A選項(xiàng)后面缺少of；B選項(xiàng)前面缺少基數(shù)詞，排除A,B；根據(jù)“but I'm not sure.”判斷，不知道具體的數(shù)字，Hundreds of此處意為“許多”，后面省略了teachers，故答案為C。

There are __________ doctors and nurses working hard in that hospital.

A. thousand B. two thousand

C. two thousands D. two thousands of

B 【解析】試題分析：句意：在那家醫(yī)院里有兩千名正在努力工作的醫(yī)生和護(hù)士。thousand與數(shù)詞連用時(shí)，不加s,故排除C項(xiàng)。thousands of成千上萬(wàn)的，故排除AD兩項(xiàng)。故選B。

—What’s one fourth and a half, do you know?

—Yes, it’s________.

A. two sixths B. three fourths

C. one three D. three sixths

B 【解析】試題分析：分子用基數(shù)詞，分母用序數(shù)詞， 分子大于1時(shí)， 序數(shù)詞后要加-s.又根據(jù)one fourth and a half得知。故選B

Now, children, turn to Page _______ and look at the _______ picture in Lesson Two.

A. twentieth; one B. twenty; one

C. twentieth; first D. twenty; first

D 【解析】試題分析：給東西編號(hào)時(shí)，序號(hào)在前時(shí)要用序數(shù)詞表示，序號(hào)在后時(shí)要用基數(shù)詞表示。此題第一個(gè)空為序號(hào)在Page之后，故應(yīng)用基數(shù)詞；第二個(gè)空為序號(hào)在名詞picture之前，故應(yīng)用序數(shù)詞。故選D

Both of the rulers are broken. I want to buy a _____________ one.

A. three B. third C. forth D. /

B 【解析】試題分析：不定代詞與序數(shù)詞連用，表“又一，在一”之意，故用序數(shù)詞。 又因?yàn)樯暇渲小皟砂殉咦佣級(jí)牧恕笨芍链颂帒?yīng)用third.故選B

December is the ______ month in a year.

A. twenty B. twelve C. twentieth D. twelfth

D 【解析】試題分析：根據(jù)前文定冠詞the可知填序數(shù)詞twelfth，選項(xiàng)C是twenty 20的序數(shù)詞形式，故選D。

--- What is the date today?

--- It's _________.

A. Thursday B. June the sixteenth C. the best day D. June fifteen

B 【解析】句意：——今天是幾號(hào)？——是六月十六日。A. Thursday星期四；B. June the sixteenth六月十六日；C. the best day最好一天；D. June fifteen六月十五。問(wèn)句是詢問(wèn)日期，排除A,C；在表達(dá)“某月某日”時(shí)，日要用序數(shù)詞，故答案為B。

She knows a lot about China as she has been to China ________.

A. for the fourth time B. four times C. a fourth time D. for four times

B 【解析】句意：她很了解中國(guó)，因?yàn)樗�去過(guò)中國(guó)四次。the fourth time第四次；four times四次；a fourth time再一次，又一次；本題表達(dá)的意思是“去過(guò)四次”，可排除A,C選項(xiàng)；另外表示去過(guò)某地多少次的時(shí)候不需要用介詞for，故答案為B。

To make city more beautiful, we need to plant more trees.

A. our B. we C. us D. ours

A 【解析】句意：為了使我們的城市更加美麗，我們需要種植更多的樹木。A. our我們的，形容詞性物主代詞；B. we我們，主格；C. us我們，賓格；D. ours我們的，名詞性物主代詞。形容詞性物主代詞后跟名詞，用作定語(yǔ)。故答案為A。