1．The chimp didn't feel well．She fell over，ignoring the other wild chimps．Finally，the sick chimp crawled over to a bush，picked some leaves and swallowed them．By the next afternoon，the chimp was as good as new!
Biologists watching the chimp were surprised．Somehow，the plant had cured the chimp!Did the chimp know the plant would make her feel better？Or was it just a lucky accident？
Many scientists don't think it has anything to do with luck．They're discovering that some animals seem to use plants to cure themselves．And these animals are leading scientists to new plants that could cure humans!
Dr．Richard Wrangham，an anthropologist at Harvard University，agrees that animals may know something we don't know about forest plants．
Wrangham got to know chimps and their diets while studying them for three years in Tanzania．"You must know a lot about an animal's feeding habits to know what it doesn't consider food，"Wrangham explains．Every morning，he saw that most chimps ate fruit near their nests．Later on，they ate on leaves．
When he noticed chimps eating the leaves of a plant they usually ignored，Wrangham thought something interesting was going on---especially when he saw that they'd sometimes walk for 20 minutes to find the plant．Another strange thing that caught his eye was how they ate the bitter leaves．
"They swallowed the leaves whole，"explains Wrangham，noting that chimps usually chew their food well．"They seemed to rub（摩擦）the leaves around the roofs of their mouths．They closed their eyes，wrinkled their noses and swallowed slowly．"
Wrangham wondered what could be so good about something tasting so bad．He had a chemist analyze the leaves．He discovered that the leaves contain a red oil that kills different viruses（病毒）．Later tests showed that the oil might even fight cancer and the AIDS virus!
Why don't the chimps chew the leaves？"Rubbing the leaves between the tongue and the inside of the mouth might allow the chemicals to enter the bloodstream directly，"he suggests，"instead of going to the stomach，where they might get destroyed by acids．The chimps seem to know what they're doing．"
67．We can learn from the passage thatA．
A．chemicals in plants help cure animals
B．chimps cure themselves by chewing plants
C．scientists live with chimps to study their diets
D．Dr．Wrangham knows a lot about forest plants
68．How can Dr．Wrangham tell which plants are medicine for chimps？C
A．By talking with the biologists．
B．By analyzing the chimps'favorite food．
C．By studying the chimps'feeding habits．
D．By comparing other scientists'discoveries．
69．The author wrote the passage toA．
A．present a finding B．test a theory
C．provide a solution D．describe an experiment
70．What does the passage mainly talk about？B
A．Forest plants
B．Animal doctors．
C．Chimp's diets
D．A cure for cancer．
分析 本篇文章屬于科普文，講述的是黑猩猩通過吃一種特殊的樹葉可以治愈自己疾病，科學(xué)家們對此迷惑不解并進(jìn)行了持續(xù)的研究．
解答 67．答案 A 推理判斷題．由第二段"Somehow，the plant had cured the chimp!"和最后一段"Rubbing the leaves between the tongue and the inside of the mouthmight allow the chemicals to enter the bloodstream directly"可知是植物中的化學(xué)成分治愈了黑猩猩．故答案為A
68．答案 C 細(xì)節(jié)理解題．由第五段"Youmust know a lot about an animal's feeding habits to know what it doesn't consider food，"Wrangham explains．Every morning，he saw that most chimps ate fruitnear their nests．Later on，they ate on leaves．可知了解了黑猩猩的飲食習(xí)慣后就可以判斷哪些東西不是黑猩猩的食物而是藥物．故答案為C
69．答案 A 寫作意圖題．閱讀全文可知作者的目的是講述科學(xué)家通過觀察黑猩猩的活動，發(fā)現(xiàn)了黑猩猩可以用吃某些植物葉子的方法治療自己．所以講的是一個科學(xué)家的發(fā)現(xiàn)．
70．答案 B 主旨大意題．閱讀全文可知作者講述的是動物治愈自己疾病的故事．
點評 科普知識與現(xiàn)代技術(shù)是高中課程標(biāo)準(zhǔn)規(guī)定的話題之一．此類題材的文章涉及內(nèi)容廣泛，如天文地理、生物醫(yī)藥、發(fā)明創(chuàng)造、計算機(jī)技術(shù)等等．這類文章的總體特點是：科技詞匯多，句子結(jié)構(gòu)復(fù)雜，理論性強，邏輯嚴(yán)謹(jǐn)．具體說來它有以下幾個特點：
1．文章中詞匯的意義比較單一、穩(wěn)定、簡明，不帶感情色彩，具有單一性和準(zhǔn)確性的特點．
2．句子結(jié)構(gòu)較復(fù)雜，語法分析較困難．為了描述一個客觀事物，嚴(yán)密地表達(dá)自己的思想，作者經(jīng)常會使用集多種語法現(xiàn)象于一體的長句．
3．常使用被動語態(tài)，尤其是一些慣用被動句式．
4．科技環(huán)保類文章在高考英語試題中出現(xiàn)的頻率最高，一直是高考的主要測試內(nèi)容，此類文章一般為說明文，但也常常夾雜著敘述和議論，并經(jīng)常出現(xiàn)一些較新的科技名詞或術(shù)語．著重從不同側(cè)面考查學(xué)生篩選、提取、推斷信息的能力．考生若經(jīng)常閱讀英語報刊，具備豐富的課外知識，并積累一定的時新詞匯，對解讀此類文章會大有幫助．
