The development of Rubber(橡胶)
　　Here is the story of rubber. From the earliest time it was common knowledge to the Peruvians(秘鲁人) that when a cut was made in the outside skin of a rubber tree, a white liquid (液体) ___(2) milk came out(流出), and that ___(3) this a sticky¹ (粘的) mass (块) of rubber might be made. This rubber is soft when warm, so that it is possible to give it any ___(4). The Peruvians made the ___(5) that it was very good for keeping out wet. Then in the early 1800's, the Americans made use of it for the first time. First they made overshoes (套鞋)to ___(6)their feet dry. Then came a certain Mr. Mackintosh, who made coats of cloth covered with natural rubber. From that day to this we have been coating cloth with (coat… ..with在。。上面覆盖上一层。。) rubber as Mr. Mackintosh ___(7), and our raincoats are still named after him.(name A after B/根据B来命名A)
　　But these first rubber overshoes and raincoats were all soft and sticky in summer, and ___(8)and inelastic(无弹性的) in the winter when it was cold. But the rubber we have today is soft and elastic² (有弹性的), ___(9) very strong -- even in the warmest summer and the coldest winter. This was made ___(10) by a man called Goodyear. After many ___(11), he found that nitric acid³ (硝酸) made the rubber much better, but it is not hard and strong enough. Then a strange thing took ___(12). A friend of his, Nicholas Hayward, had the idea in this sleep that rubber might be made hard and strong if fixed⁴ with sulfur⁵ (硫磺)(if fixed with sulfur/如果用硫磺进行加固) and put in the sun. Goodyear put this idea ___(13) the test, and saw that it did have more or less the desired (所希望的)effect -- though somewhat⁶ less than more. The only effect it had was on the outside of the rubber. It is common knowledge(common knowledge：常识) now that the ___(14) to make rubber hard and strong is by heating⁷ it with sulfur. It took Goodyear four more years to find this method. When at last he did it, he had ___(15) at all. Everything of the smallest value had been used to get money, even his sons' school-books,
　　1. A)for B)to C) about D)with
　　2. A) like B)alike C)resembled D)similar
　　3. A) on B)from C)up D)in
　　4. A)use B)heat C)pressure D)form
　　5. A)creation B)invention C)discovery D)recognition
　　6. A)retain B)keep ```` C)hold D)set
　　7. A)did B)built C)tried D)conducted
　　8. A)weak B)gentle C)hard D)strong
　　9. A)or B)however C)though D)even
　　10. A)capable B)probable C)practical D)possible
　　11. A)experiments B)checks C)discoveries D)works⁸
　　12. A)form B)place C)shape D)size
　　13. A) on B)to `` C)in ``` D)with
　　14. A) system B)style C)way D)direction
　　15. A) everything B)anything C)nothing D)something

　　参考答案：
　　1.Choose the best answer：(选自职称英语考试指定用书)
　　(cultural Differences 难度B，C级)
　　答案1。B; 2。D;
　　(Canned Foods: Convenience and Nutrition⁹ 难度B，C级)
　　答案1。A; 2。B;
　　(Canned Foods: Convenience and Nutrition 难度B，C级)
　　答案1。A;
　　2.Put in "the" or "a (an)" if necessary:
　　the, the, the, the, /, then , /, the, the, an, an
　　3.What do the three "it" refer to?/下面三个“it”分别指代什么? (Dyslexia 难度B，C级)
　　it1: dyslexia
　　it2: dyslexia
　　it3: baby
　　4.Fill in each blank with the best answer from the four given choices/从每个选项下所给出的四个被选项中选择一个最佳答案。(B/C级)
　　1.B.解题思路：被选项是介词时关注空格前后与之搭配的结构 --往往是其前面的动词，名词，形容词和其后面所带的宾语。该空格后是某种人(秘鲁人)作宾语，再结合句意判断B。
　　2.A.解题思路: 关注被选项中的“关系项”。首先重点关注A和B。再借助空格后的搭配结构--带名词作宾语，判断答案为A (象。。一样的)
　　3.B.解题思路：被选项是介词时关注空格前后与之搭配的结构。空格处与被选介词搭配的是动词 made。该句陈述句句的结构是：a sticky mass of rubber might be made (from) this.
　　4.D.借助句意判断答案“(因为软而易)成型”合理。
　　5.C.借助句意判断“发现(橡胶有防雨功能这种现象)”合理。
　　6.B.解题思路：借助与被选动词搭配使用的结构选择答案。keep their feet dry(保持脚干燥)是答案。
　　7.A.解题思路：借助被选动词所在的结构。as Mr. Mackintosh did.是省略句。
　　8.C.借助前文(夏天软)，则“冬天硬”。
　　9.C.解题思路：被选项中出现副词时往往要借助句意选择答案。借助句意(前后对比)选择C。
　　10.D.该题考察近义词的辨析。make sth./it possible是习惯搭配结构
　　11.A.借助句意判断“实验”是答案。work: 劳动;操作;作业;功课;工作;职业(pl.)著作，作品, 工厂;如：Shakespeare's works /莎士比亚著作;a gas works /煤气厂 常见短语：at work; out of work; hard work; in the works
　　12.B.解题思路：借助习惯搭配。take place是“发生”。take shape 是“成形, 形成, 具体化”，在借助句意判断答案。
　　13.B.解题思路：借助与被选项介词搭配的结构。
　　put to the test/使受试验
　　put to use/使用, 利用
　　14.C.解题思路：借助与被选项名词搭配使用的不定式结构。只有way带不定式结构作定语。
　　in…direction “在…的方向上”
　　15.C.解题思路：借助“左右结构”。not..at all(一点也不)是固定搭配结构