【 2012四川成都】41. Some scientists think it will take _________of years to make robots do most work for humans.
A. hundreds B. hundred C. thousand
【答案】C 为什么不是A ?
【解释：答案就是A,如果C正确,为啥B不对呢?hundreds of数百：不定量数词】
【2012四川省乐山市】30. In order to finish the project, we’ll have to work_______hours a day.
A. more two B. two more C. two another
【答案】C 能跟我说下ABC的区别吗?
【解释：答案B=another two hours=two hours more：又两小时,另外两小时的意思.这里的more不是比较级的】
【2012贵州铜仁】26 About ____of the students in Grade Nine this year were born in the_____.
A. three five; 1996. B. three fifths; 1990s
C. third fifth; 1997. D. third fifths; 1990s
【答案】B 基数词和序数词放在一块 变啥了
【解释：基数词+序数词：表示分数：序数词是分母,基数词是分子：这里是四分之三的意思.1990s是1990至1999这10年的复数形式】
【2012浙江杭州】19.We have two ears and one mouth so that we can listen________we speak.
A. as twice much as B. twice an much as
C. as much as twice D. as much twice as
【答案】B 考什么的知识点
【解释：B. twice as(应该是as) much as：这是倍数表达：倍数+as+形容词+as】
【2012四川宜宾】28. —Would you like to have _____ apples?
—No, thank you.. I’ve had enough.
A. other two B. another two C. more two D. two others
【答案】B other two more two区别是
请看【2012四川省乐山市】30.的解释.
【2012四川自贡】23. -- I hear your friend is visiting San Ya again. Is it the second time for him?
-- Yes, and he will come for ____time next spring.
A. a third B. a second C. the third
【答案】A 为什么不用C
【解释：a +序数词,不强调明显的顺序.翻译“又第三”,这里的意思是“他又还会来第三次（不绝对）”.比如你从盒子里拿出粉笔,没排顺序吧?】
【2012四川南充】( ) 30. I think ______ should not be allowed to drive.
A. sixteen years old B. sixteen –year-old C. sixteen-year-olds
【答案】C 为什么不用B了
【解释：选C就表明这个是名词了,相当于sixteen-year-old children：十六岁的孩子.而B是个形容词.】
Sixteen-year-olds should not be allowed to work at night.
十六岁的孩子不应该被允许在晚上工作.