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(路径).
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(毒药) 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 这是一篇说明文.
吃掉南美的野葛
野葛是南美一种快速生长的覆盖了大面积的蔓生植物.它很常见,人们可能会认为这是一种土生土长的植物,但它不是.野葛是在1879年从日本带到美国的.许多美国人认为他们很美丽,就开始种植,他们不知道它可以在夏季一天长到一尺,他们不知道它将长的漫过任何路径.
在日本,野葛经历了寒冷的冬天而生长缓慢.但是在美国,它有一个很长的温暖和潮湿的生长季节.好天气会让野葛快速生长.在1920年代,人们用野葛养农场动物.十年之后,政府支持种植野葛,因为它使土壤避免流失.然而到了1950年,政府不再想让人们种植.二十年后,政府说这是一种有害的植物.
野葛在树木和建筑物上生长,可做出一些美丽的形状.然而,野葛覆盖了他们后树就死了,因为他们不能得到足够的阳光.科学家正在寻找方法来杀死野葛.他们使用毒药杀死野葛.然而,一些毒药甚至使它们长得更好.科学家也很难挖出野葛,它真的很结实.
因为葛藤很难杀死,有些人就更好的使用它.他们试图找到它不同的用途.他们发现野葛可以用来造纸和篮子,可以用来喂山羊,甚至可以吃.科学家正在研究它,希望可以用作药材.至少,野葛是来自非本地植物的意想不到的结果.
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,野葛在暖湿的气候中长得很快,故选:C.
43.A 由句子Scientists also find it difficult to dig up 可知,野葛不容易破坏,故选:A.
44.B 根据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,这一段描述的是人们怎样使用野葛.故选:B
45.B 根据给出的标题"吃掉南美的野葛"可以看出,作者通过标题可以很快的引起读者阅读的兴趣,故选:B
点评 一些晦涩难懂的说明文,学生需要在理解的基础上将有关内容系统化才能找到问题的答案.此篇短文就需要学生去挖掘文章深层含义,从而正确理解作者的言外之意.