2018年6月7日雅思阅读真题+题目+答案：Putting the brakes on climate change: Are hydrogen cars the answer?

2018年6月7日雅思阅读真题+题目+答案：Putting the brakes on climate change: Are hydrogen cars the answer?

A

It is tempting to think that the conservation of coral reefs and rainforests is a separate issue from traffic and air pollution. But it is not. Scientists are now confident that rapid changes in the Earth’s climate are already disrupting and altering many wildlife habitats. Pollution from vehicles is a big part of the problem.

B

The United Nation’s Climate Change Panel has estimated that the global average temperature rise expected by the year 2100 could be as much as 6°C, causing forest fires and dieback on land and coral bleaching in the ocean. Few species, if any, will be immune from the changes in temperature, rainfall and sea levels. The panel believes that if such catastrophic temperature rises are to be avoided, the quantity of greenhouse gases, especially carbon dioxide, being released into the atmosphere must be reduced. That will depend on slowing the rate of deforestation and, more crucially, finding alternatives to coal, oil and gas as our principal energy sources.

C

Technologies do exist to reduce or eliminate carbon dioxide as a waste product of our energy consumption. Wind power and solar power are both spreading fast, but what are we doing about traffic? Electric cars are one possible option, but their range and the time it takes to charge their batteries pose serious limitations. However, the technology that shows the most potential to make cars climate-friendly is fuel-cell technology. This was actually invented in the late nineteenth century, but because the world’s motor industry put its effort into developing the combustion engine, it was never refined for mass production. One of the first prototype fuel-cell-powered vehicles have been built by the Ford Motor Company. It is like a conventional car, only with better acceleration and a smoother ride. Ford engineers expect to be able to produce a virtually silent vehicle in the future.

D

So what’s the process involved – and is there a catch? Hydrogen goes into the fuel tank, producing electricity. The only emission from the exhaust pipe is water. The fuel-cell is, in some ways similar to a battery, but unlike a battery, it does not run down. As long as hydrogen and oxygen are supplied to the cell, it will keep on generating electricity. Some cells work off methane and a few use liquid fuels such as methanol, but fuel-ceils using hydrogen probably have the most potential. Furthermore, they need not be limited to transport. Fuel-cells can be made in a huge range of size, small enough for portable computers or large enough for power stations. They have no moving parts and therefore need no oil. They just need a supply of hydrogen. The big question, then, is where to get it from.

。。。。余下雅思阅读真题原文省略！

Questions 1-6

Reading Passage has seven paragraphs, A-G.

Choose the correct heading for paragraphs A-F from the list of headings below.

Write the correct number, i-ix, in boxes 1-6 on your answer sheet.

List of Headings

i Action already taken by the United Nations

ii Marketing the hydrogen car

iii Making the new technology available worldwide

iv Some negative predictions from one group of experts

v How the new vehicle technology works

vi The history of fuel-cell technology

vii A holistic view of climatic change

viii Locating the essential ingredient

ix Sustaining car manufacture

1 Paragraph A

2 Paragraph B

3 Paragraph C

4 Paragraph D

5 Paragraph E

6 Paragraph F

。。。。。余下雅思阅读真题题目及答案省略！

2018年6月7日雅思阅读真题+题目+答案：Putting the brakes on climate change: Are hydrogen cars the answer?，10元有偿下载完整版！