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 sticky (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 elastic (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 acid (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 fixed with sulfur (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 somewhat 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 heating 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)works
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 Nutrition 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。
