From the earlier time it was well ___1___ to the Peruvians that when a cut ___2___ made in the thick skin of a ___3___ tree, a white liquid like milk came ___4___. From this fluid (流動的) a sticky ___5___ of rubber might be made. This rubber is ___6___ and wax-like when warm so that it is ___7___ to give any form.
The Peruvians ___8___ the discovery that it is very good for ___9___ out water. Then in the early ___10___ of the century they made overshoes to ___11___ their feet dry. Then a certain Mr Mackintosh ___12___ coats of cloth which were ___13___ with rubber. Today Mackintosh raincoats are still ___14___ after him.
But these first rubber shoes ___15___ raincoats were unpleasantly soft and sticky in ___16___. They were also stiff and very ___17___ in winter. They were like wax(蠟) although they ___18___ a bit stronger.
But the rubber ___19___ use today has been improved. It is ___20___ sticky but soft and elastic(彈性的) and strong enough for any season.
1. A. talked     B. heard  C. seen    D. known
2. A. has  B. was     C. may    D. will
3. A. rubber    B. apple  C. orange       D. oak
4. A. from      B. through      C. out     D. up
5. A. raincoat  B. shoes  C. border D. mass
6. A. hard       B. fast     C. stubborn     D. soft
7. A. important      B. impossible  C. possible      D. uncertain
8. A. made      B. found  C. wrote  D. neglected
9. A. finding   B. keeping      C. making      D. pouring
10. A. kind     B. part    C. sort     D. halves
11. A. clean    B. clear   C. keep   D. prevent
12. A. made    B. found  C. appeared    D. gave
13. A. full      B. like     C. lined   D. applied
14. A. looked  B. named C. made  D. searched
15. A. or B. and     C. with    D. but
16. A. today    B. summer      C. winter D. rain
17. A. soft      B. sticky  C. elastic D. cold
18. A. felt       B. made  C. needed       D. produced
19. A. Mr Mackintosh    B. the Peruvians     C. we      D. is
20. A. also      B. always       C. neither       D. not
1-5DBACD 6-10DCABB 11-15CACBB 16-20BDACD 
 
本文是一篇說明文，講敘橡膠的產(chǎn)生、特點和作用。
1. D。be well known 是固定短語，表示“對…了解、熟悉”。
2. B。因為“切口(cut)”可知應(yīng)該是被人去做，所以是 was made。
3. A。根據(jù)下文兩次出現(xiàn)的 rubber 可得出答案。
4. C。從上文可以得知“像牛奶一樣的白色液體從橡膠樹上流出來”。
5. D。從上下文可以得知“從樹上流下來的液體，慢慢會變稠”，所以“粘團”就形成了，但它不能直接形成雨衣或鞋。
6. D。根據(jù)常識橡膠是“軟的”。
7. C。根據(jù)前面的形容詞 warm 得出答案，當變暖或加熱時“能”做出任何形狀。
8. A。因為“發(fā)現(xiàn)”是名詞，不能選found，make a discovery是固定短語。
9. B。根據(jù)常識，橡膠可以“防”水，其余選項不符句意。
10. B。表示本世紀的“早期、前期”，不能選 halves，如果用 half不能用復(fù)數(shù)。
11. C。根據(jù)前面的“鞋墊”和后面的“干燥”得出答案是“保持干燥”。
12. A。根據(jù)后面的 coat 判斷答案是“被做”。
13. C。指這種布料(cloth)是用橡膠“排制”而成的。
14. B。根據(jù)前面的雨衣判斷可知仍然還是以他的名字“命名的”，其余選項不符句意。
15. B。根據(jù)句意，這是兩個物質(zhì)名詞 shoes 和 raincoat 是并列的，但不能選or(或者)。
16. B。夏天天氣炎熱，雨衣變軟，故 summer 符合語境。
17. D。根據(jù)常識，橡膠在夏天溫度高時變軟，相反在冬天“冷”時變硬。
18. A。根據(jù)前面的“像蠟”和后面的 stronger 得出答案是“摸起來”，表示感覺。
19. C。根據(jù)句中的時間狀語 today 判斷是 we(我們)使用。
20. D。根據(jù)兩個相反的形容詞，得出答案(not…but意為“不是…而是”)。
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