2020届高三英语专项训练——阅读理解D篇(全国一卷)(个人整理)(1)

2020届高三英语专项训练——阅读理解 D 篇

A new study shows that rising levels of planet-warming gases may reduce important nutrients in food crops.

Researchers studied the effects of one such ga—s carbon dioxide—on rice. The researchers grew rice plants in a controlled environment. They set carbon dioxide levels

to what scientists are predicting for our planet by the end of the century. They found

that the resulting rice crops had lower than normal levels of vitamins, minerals and protein. The researcherss aid the effects of planet-warming gases would be most severe for the poorest citizens in some of the least developed countries. These people generally eat the most rice and have the least complex diets, they noted.

In the experiment, scientists grew 18 kinds of rice in fields in China and Japan. They pumped carbon dioxide gas over the plants in an effort to create the atmosphere of the future. Rice grown under high carbon dioxide conditions had, on average, 13 to 30 percent lower levels of four B vitamins and 10 percent less protein. The crops also had 8 percent less iron and 5 percent less zin（c 锌）an rice grown under normal

conditions.However,vitamin E levels increased by about 13 percent on average.

The results are bad news, “ especiallyf or the nutrition of the poorer population in less-developed countries, s”aid the University of Tokyo' sK azuhiko Kobayashi, who helped to write the report. That includes about 600 million people in Indonesia, Cambodia, Myanmar, Bangladesh, Laos and other nations, mainly in Southeast Asia, the report said.

One of the scientists is Sam Myers of Harvard University in the American state of Massachusetts. He said that findings like this are an example of the surprises climate change create. My“ concern is there are many more surprises to com,e”he said.

Myers noted that pollution, loss of some species, destruction of forests, and other human activities are likely to produce unexpected problems. He said that you cannot completely change all the natural systems that living organisms have grown to depend on over millions of years without having effects come back to affect our own health.

The new study suggests a way to lower the nutritional harm of climate change. One way, Kobayashi said, is grow different forms of rice that have shown to be more resistant to

higher

carbon dioxide levels.

32.Which county would be influenced most by planet-warming gases according to the text?

A.China

B. Myanmar

C. America

D. Britain

33.How is Paragraph 3 mainly developed?

A.By comparison.

B. By giving examples.

C. By analyzing causes.

D. By describing a process.

34.What does the underlined sentence in Paragraph 5 mean?

A.Climate change will be difficult to predict.

B.Climate change will lead to more good effects.

C.Climate change will be harmful to environment.

D.Climate change will cause more unexpected problems.

35.Which of the following statements is true according to the text?

A.Myerssaid we could change all the natural systems for the sake of our health.

B.The poorest people in all the least developed countries would be influenced most.

C.The researchers grew 18 kinds of rice in China and Japan in a controlled

environment.

D.Protein in rice grown under high carbon dioxide conditions is increased by 10

percent. BADC

Plants are boring. They just sit there （光合作用）while animals have all the fun. Right? Not so much. A new study has found that there is a long history of interactions between ants and plants. The ant and plant co-evolution（协同进化）started with ants feeding on plants and plants evolving ant-friendly features.

Plants make a number of different structures that are specific for ant use. Some

plants have evolved features that persuade ants into defending them from attack from other insects and even mа mmа l?. Тhе?е ?n сlud е hollow thorns that аnt? will

live ?n??琼d浆）оеn ,l oеr аеvех ?tr a n

or stems for the ants to eat. Some ants will just cheat and take the nectar and run, but