How can we stop climate change? How can we stop air pollution? How can we live on a green planet? One way is to use clean energy. Clean energy does not harm the Earth. It never runs out. Energy from the Sun is clean. We just need to learn how to get and store more of it.
Plants use energy from the Sun. They use it to turn water and air into sugar. The sugar can be used as food. Scientists know a lot about how plants make food. Some scientists want to get energy from the Sun like plants do. They want to make a machine that can use sunlight to make fuel (燃料) from water.
Water is made up of two different parts. Breaking water into its parts is hard. Plants do it all the time, though. It is part of how they make food. With energy from the Sun, the new machine will break water into its parts. One of the parts will be used as fuel. Then the fuel is used to make electricity (电). The electricity can power cars, houses, and so on.
This fuel is better for the Earth than gasoline (汽油). It does not pollute the air. Plants can help us learn how to make clean energy!
1.1. How does the writer start this article?
A By telling stories.
B By asking questions.
C By comparing facts.
D By giving examples.
解析:选B。B主旨大意题。文章开头“How can we stop climate change? ....use clean energy”意为“我们如何阻止气候变化?我们如何阻止空气污染?我们如何在一个绿色的星球上生活?一种方法是使用清洁能源”,这里作者通过提出三个问题,然后给出一种解决这些问题的方案,即使用清洁能源,所以作者通过提问开始了这篇文章,而不是通过讲故事、比较事实或举例子,故选项B正确,排除其余选项。因此,此小题应选择B项。
2.2. What will the new machine do?
A Break water into its parts.
B Make some food from plants.
C Turn water and air into sugar.
D Produce sugar as new energy.
解析:选A。A细节理解题。文章第二段最后一句“They want to make a machine that can use sunlight to make fuel from water”意为“他们想制造一台可以利用阳光从水中制造燃料的机器”,以及第三段第二句“With energy from the Sun, the new machine will break water into its parts”意为“有了太阳的能量,新机器将会把水分解成两部分”,由此可知新机器的功能是利用阳光把水分解成两部分,而不是从植物中制造食物、把水和空气变成糖或生产糖作为新能源,所以选项A正确,其余选项均错误。因此,此小题应选择A项。
3.3. In which part of a magazine can we read the article?
A Health.
B Society.
C Science.
D History.
解析:选C。C推理判断题。文章主要介绍了科学家正在研究如何像植物一样利用太阳能从水中制造燃料,这是科学方面的内容,而不是关于健康、社会或历史的,所以这篇文章应该出现在杂志的“科学”部分,而不是“健康”、“社会”或“历史”部分,故选项C正确,其余选项可排除。因此,此小题应选择C。