高考阅读技巧训练题及答案（阅读理解每日一练）

（2018•北京•C）Plastic-Eating Worms，下面我们就来聊聊关于高考阅读技巧训练题及答案?接下来我们就一起去了解一下吧!

高考阅读技巧训练题及答案

（2018•北京•C）

Plastic-Eating Worms

Humans produce more than 300 million tons of plastic every year. Almost half of that winds up in landfills(垃圾填埋场), and up to 12 million tons pollute the oceans. So far there is no effective way to get rid of it, but a new study suggests an answer may lie in the stomachs of some hungry worms.

Researchers in Spain and England recently found that the worms of the greater wax moth can break down polyethylene, which accounts for 40% of plastics. The team left 100 wax worms on a commercial polyethylene shopping bag for 12 hours, and the worms consumed and broke down about 92 milligrams, or almost 3% of it. To confirm that the worms' chewing alone was not responsible for the polyethylene breakdown, the researchers made some worms into paste(糊状物) and applied it to plastic films. 14 hours later the films had lost 13% of their mass — apparently broken down by enzymes (酶) from the worms' stomachs. Their findings were published in Current Biology in 2017.

Federica Bertocchini, co-author of the study, says the worms' ability to break down their everyday food — beeswax — also allows them to break down plastic. ＂Wax is a complex mixture, but the basic bond in polyethylene, the carbon-carbon bond, is there as well, ＂she explains, ＂The wax worm evolved a method or system to break this bond. ＂

Jennifer DeBruyn, a microbiologist at the University of Tennessee, who was not involved in the study, says it is not surprising that such worms can break down polyethylene. But compared with previous studies, she finds the speed of breaking down in this one exciting. The next step, DeBruyn says, will be to identify the cause of the breakdown. Is it an enzyme produced by the worm itself or by its gut microbes(肠道微生物)?

Bertocchini agrees and hopes her team's findings might one day help employ the enzyme to break down plastics in landfills. But she expects using the chemical in some kind of industrial process — not simply ＂millions of worms thrown on top of the plastic.＂

（1）What can we learn about the worms in the study?

A. They take plastics as their everyday food.

B. They are newly evolved creatures.

C. They can consume plastics.

D. They wind up in landfills.

（2）According to Jennifer DeBruyn, the next step of the study is to .

A. identify other means of the breakdown

B. find out the source of the enzyme

C. confirm the research findings

D. increase the breakdown speed

（3）It can be inferred from the last paragraph that the chemical might .

A. help to raise worms

B. help make plastic bags

C. be used to clean the oceans

D. be produced in factories in future

（4）What is the main purpose of the passage?

A. To explain a study method on worms.

B. To introduce the diet of a special worm.

C. To present a way to break down plastics.

D. To propose new means to keep eco-balance.

【答案】

（1）C

（2）B

（3）D

（4）C

【考点】主旨大意题，推理判断题，细节理解题，科普环保类，说明文

【解析】

【分析】这是一篇说明文，介绍吃塑料的虫子的工作原理及应用设想。

⑴细节理解。将题干中的worms in the study定位在第二段第二句，the worms consumed and broke down about 92 milligrams可知这些虫子吃塑料，故答案为C。

⑵细节理解。将题干中的关键词Jennifer DeBruyn定位在第四段，找到the next step出现在倒数第二句The next step, DeBruyn says, will be to identify the cause of the breakdown，可知，下一步将是确定这种分解的原因，即找到酶的来源，故答案为B。

⑶推理判断。确定题干中chemical最后一段的最后一句 But she expects using the chemical in some kind of industrial process — not simply ＂millions of worms thrown on top of the plastic.，可知，她期望把化学物质用于某种工业生产中，而不是仅仅把虫子扔到塑料上，故答案为D。

⑷主旨大意。通过文章标题Plastic-Eating Worms以及首尾段落的理解，可知全文在介绍虫子与塑料的降解之间的关系，所以C项：介绍一种分解塑料的方法，即“吃塑料的虫子”是本文的中心，故答案为C。

【点评】本文属于科普类说明文，阅读时在文章首段确定文章的中心句，然后快速浏览文章内容。阅读问题，找到问题中的关键词。在文章中定位问题中的关键词，答案就在关键词附近。注意关键词整合后答题。

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