Have you ever seen a solar panel（太阳能电池板）in your neighborhood? Solar panels take energy from the sun and turn it into electricity. Over the past ten years, the price of solar panels has gone down greatly. In many parts of the world, solar energy is now the cheapest form of electricity. More and more people have started using solar energy to power（给……供电）their homes.
However, solar panels also have their problems. They stop working at night and on rainy days. Is it possible to make them produce electricity all of the time?
Scientists at Suzhou University, China, have invented a new solar panel now. It can produce electricity not only from solar energy but also from falling rain. When a raindrop falls on the solar panel and then rolls（滚动）down, it creates friction（摩擦力）on the surface of the panel, which can then be turned into electricity.
Sun Baoquan is one of the inventors. “Our new invention can produce electricity in any weather during the day,” he says. “It can even provide electricity at night if there is rain.”
The solar panel, however, does not make much electricity from falling rain. So Sun Baoquan is still working hard to improve it. The scientist also wants to make solar panels more flexible, which are as soft as clothing.
The field of solar energy is developing fast. Scientists around the world have been improving solar panels. Some have been working on ways to join solar panels and wind power together. Some have been trying to use sunlight to produce liquid and gas fuels（液体和气体燃料）.
31. Which energy is now the cheapest form of electricity in many parts of the world?
A. Solar energy. B. Water energy. C. Wind energy.
32. What is one of the problems of common solar panels?
A. The price of them is rising.
B. They can’t work all of the time.
C. They can hardly power people’s homes.
33. Why is the new solar panel more scientific and useful?
A. It has a larger size than a common one.
B. It produces more electricity from falling rain than solar energy.
C. It can produce electricity day and night and even in rainy conditions.
34. What does the underlined word “flexible” mean in Paragraph 5?
A. 柔软的 B. 光滑的 C. 坚硬的
35. We can infer（推断）from this text that ________.
A. there is no room for developing solar energy
B. there is no end to the research in the field of solar energy
C. solar energy has completely taken the place of other kinds of energy
本文介绍了新型太阳能电池板，不仅可以昼夜工作，还可以利用降雨发电，更具科学性和实用性。
31.A【解析】细节理解题。根据第一段中“In many parts of the world, solar energy is now the cheapest form of electricity.”可知，在世界许多地方，太阳能是目前最便宜的供电形式。故选A。
32.B【解析】细节理解题。根据第二段中“They stop working at night and on rainy days.”可知，普通太阳能电池板在晚上和雨天停止工作，这是普通太阳能电池板的一个问题。故选B。
33.C【解析】细节理解题。根据第三段中“It can produce electricity not only from solar energy but also from falling rain.”和第四段中“Our new invention can produce electricity in any weather during the day. It can even provide electricity at night if there is rain.”可知，新型太阳能电池板不受天气影响，可以在白天和晚上工作，不仅可以利用太阳能发电，还可以利用降雨发电，所以说新型太阳能电池板更具科学性和实用性。故选C。
34.A【解析】词意猜测题。根据第五段中“which are as soft as clothing”可知，新型太阳能电池板可以像衣服一样柔软，所以此处划线部分单词flexible的意思是“柔软的”。故选A。
35.B【解析】推理判断题。根据最后一段中“Scientists around the world have been improving solar panels. Some have been working on ways to join solar panels and wind power together. Some have been trying to use sunlight to produce liquid and gas fuels.”可知，全世界的科学家都在改进太阳能电池板，有些人正在研究将太阳能电池板和风能结合起来的方法，有些人试图利用阳光生产液体和气体燃料，由此可以推断出：太阳能领域的研究一直在进行，永无止境。故选B。
