四级备考 六级备考 经验交流 模拟试题 历年真题 每日一练

消单词 精品试听 直播课程 名 师 热推课程

首页 > 备考辅导 > 六级备考 > 阅读 >

2019年英语六级阅读练习题(浮游生物)

2019-01-07 13:33 来源:文都网校 阅读()

  2018年下半年英语六级考试顺利结束了,距离下一次考试还有一段时间,有要再战的或者新报考的可以从现在开始准备起来,英语学习是一个长期积累的过程,不断练习才能厚积薄发,所以大家跟着小编练习一些英语六级阅读吧。

  Scattered through the seas of the world are billions of tons of small plants and animals called plankton. Most of these plants and animals are too small for the human eye to see. They drift about lazily with the currents, providing a basic food for many larger animals. Plankton has been described as the equivalent of the grasses that grow on the dry land continents, and the comparison is an appropriate one. In potential food value however, plankton far outweighs that of the land grasses. One scientist has estimated that while grasses of the world produce about 49 billion tons of valuable carbohydrates each year. The sea’s plankton generates more than twice as much.

  Despite its enormous food potential, little effort was made until recently to farm plankton as we farm grasses on land. Now marine scientists have at last begun to study this possibility, especially as the sea’s resources loom even more important as a means of feeding an expanding world population.

  No one yet has seriously suggested that “planktonburgers” may soon become popular around the world. As a possible farmed supplementary food source, however, plankton is gaining considerable interest among marine scientists.

  One type of plankton that seems to have great harvest possibilities is a tiny shrimplike creature called krill. Growing to two or three inches long, krill provide the major food for the giant blue whale, the largest animal ever to inhabit the Earth. Realizing that this whale may grow 100 feet and weigh 150 tons at maturity, it is not surprising that each one devours more than one ton of krill daily.

  Krill swim about just below the surface in huge schools sometimes miles wide, mainly in the cold Antarctic. Because of their pink color, they often appear as a solid reddish mass when viewed from a ship or from the air. Krill are very high in food value. A pound of these crustaceans contains about 460 calories—about the same as shrimp or lobster, to which they are related.

  If the krill can feed such huge creatures as whales, many scientists reason, they must certainly be contenders as new food source for humans.

  1. Which of the following best portrays the organization of the passage?

  A. The author presents the advantages and disadvantages of plankton as a food source.

  B. The author quotes public opinion to support the argument for farming plankton.

  C. The author classifies the different food sources according to amount of carbohydrate.

  D. The author makes a general statement about plankton as a food source and then moves to a specific example.

  2. According to the passage, why is plankton regarded to be more valuable than land grasses?

  A. It is easier to cultivate.

  B. It produces more carbohydrates.

  C. It does not require soil.

  D. It is more palatable.

  3. Why does the author mention “planktonburgers”?

  A. To describe the appearance of one type of plankton.

  B. To illustrate how much plankton a whale consumes.

  C. To suggest plankton as a possible food sources.

  D. To compare the food values of beef and plankton.

  4. What is mentioned as one conspicuous feature of krill?

  A. They are the smallest marine animals.

  B. They are pink in color.

  C. They are similar in size to lobsters.

  D. They have grass like bodies.

  5. The author mentions all of the following as reasons why plankton could be considered a human food source except that it is ___.

  A. high in food value.

  B. in abundant supply in the oceans.

  C. an appropriate food for other animals.

  D. free of chemicals and pollutants.

  参考答案:

  DBCBD

     以上就是小编为大家提供的英语六级阅读练习题,希望大家多多练习。考生们想了解更多四六级备考课程备考资讯,请点击文都网校四六级资讯站查询!有问题找文都☞☞☞详情咨询入口>>>

2018年12月大学英语四级作文真题

(点击图片进入专题>>)

   课程推荐

2018年12月英语四六级真题解析

2018年12月大学英语四六级真题解析

2019年6月四六级全程班

2019年6月大学英语四级全程班

2019年6月大学英语六级全程班

     编辑推荐

备考交流
2019年英语四六级考试内容详解(笔试+口试)
备考2019年:英语四六级考试寒假复习计划
2019年英语四六级口语考试内容及流程详情

备考2019:英语四级听力经济类词汇背诵

责任编辑:wy

大学英语四六级网上课程热报班次

次名称 班次特点 活动

2019年6月大学英语四级全程班

课程构成:前基础阶段+基础阶段+强化模块阶段+真题解析冲刺阶段

课程特色:PC端、移动端、无有效期内自由看。

¥150
2019年6月大学英语六级全程班 ¥150
>>>查看更多四六级课程<<<

四六级免费在线咨询

文都四六级交流群

文都四六级QQ群437058182486117399517034650

 

上一篇:2019年英语六级阅读练习题(保险)

下一篇:2019年英语六级阅读练习题(动物移动)

关注官方微信
0元领取学习资料