11.The Vine That Ate the South
Kudzu is a fast-growing vine(蔓生植物) that covers a large area in the southern United States.It is so common that one might think it is a native plant,but it is not.Kudzu was brought to the United States from Japan in 1876.Many Americans thought it was beautiful,and they began to plant it.They didn't know it could grow up to a foot a day during the summer months.Nor did they know it would grow up and over anything in its path(路徑).
In Japan,kudzu experienced cold winters and a short growing season.But in the United States,it has a very long growing season with warm and wet southern weather.It is fine weather for the vine to grow fast.
In the 1920s,people used the vine to feed farm animals.Ten years later,the government supported to plant kudzu because it kept soil(土壤) from washing away.However,by the 1950s,the government no longer wanted people to plant the vine.Twenty years after that,the government said it was a harmful plant.
The vine grows up trees and buildings,making some beautiful shapes.However,trees die after kudzu covers them because they can not get enough light.Scientists are looking for ways to kill the vine.They used poisons(毒藥) to kill the vine.However,some of the poisons made it grow even better.Scientists also find it difficult to dig up Kudzu.The plant is really tough.
Because kudzu is so hard to kill,some people are making the best of it.So they try to find different uses for the vine.They find the vine can be used to make paper and baskets,it can be used to feed the goats,and it can even be eaten by people.Scientists are studying it in the hope that the vine can be used as a medicine.At the very least,kudzu serves as an example of the unexpected results that can come from non-native plants.
42.We can learn from the passage that.C
A.kudzu mostly grows in the northern America
B.kudzu was brought to Japan from America
C.kudzu grows very fast in warm and wet weather
D.Americangovernment has never supported to plant kudzu
43.The underlined word"tough"in Paragraph 4probably means"A".
A.not easily broken
B.widely used
C.hard to grow
D.important to one's health
44.The last paragraph is mostly aboutB.
A.how quickly the vine grows
B.how people use the vine
C.why people want to kill the vine
D.why people eat the vine
45.The writer uses the title"The Vine That Ate the South"most probablytoB.
A.let readers know kudzu is a vine
B.interest readers in a humorous way
C.tell readers the vine is a kind of food
D.get readers to realize the passage is serious.
分析 這是一篇說明文.
吃掉南美的野葛
野葛是南美一種快速生長的覆蓋了大面積的蔓生植物.它很常見,人們可能會認(rèn)為這是一種土生土長的植物,但它不是.野葛是在1879年從日本帶到美國的.許多美國人認(rèn)為他們很美麗,就開始種植,他們不知道它可以在夏季一天長到一尺,他們不知道它將長的漫過任何路徑.
在日本,野葛經(jīng)歷了寒冷的冬天而生長緩慢.但是在美國,它有一個很長的溫暖和潮濕的生長季節(jié).好天氣會讓野葛快速生長.在1920年代,人們用野葛養(yǎng)農(nóng)場動物.十年之后,政府支持種植野葛,因為它使土壤避免流失.然而到了1950年,政府不再想讓人們種植.二十年后,政府說這是一種有害的植物.
野葛在樹木和建筑物上生長,可做出一些美麗的形狀.然而,野葛覆蓋了他們后樹就死了,因為他們不能得到足夠的陽光.科學(xué)家正在尋找方法來殺死野葛.他們使用毒藥殺死野葛.然而,一些毒藥甚至使它們長得更好.科學(xué)家也很難挖出野葛,它真的很結(jié)實.
因為葛藤很難殺死,有些人就更好的使用它.他們試圖找到它不同的用途.他們發(fā)現(xiàn)野葛可以用來造紙和籃子,可以用來喂山羊,甚至可以吃.科學(xué)家正在研究它,希望可以用作藥材.至少,野葛是來自非本地植物的意想不到的結(jié)果.
解答 42.C 由句子But in the United States,it has a very long growing season with warm and wet southern weather可知,野葛在暖濕的氣候中長得很快,故選:C.
43.A 由句子Scientists also find it difficult to dig up 可知,野葛不容易破壞,故選:A.
44.B 根據(jù)They find the vine can be used to make paper and baskets,it can be used to feed the goats…used as a medicine.可知,這一段描述的是人們怎樣使用野葛.故選:B
45.B 根據(jù)給出的標(biāo)題"吃掉南美的野葛"可以看出,作者通過標(biāo)題可以很快的引起讀者閱讀的興趣,故選:B
點評 一些晦澀難懂的說明文,學(xué)生需要在理解的基礎(chǔ)上將有關(guān)內(nèi)容系統(tǒng)化才能找到問題的答案.此篇短文就需要學(xué)生去挖掘文章深層含義,從而正確理解作者的言外之意.