問題詳情

請依下文回答第 46 題至第 50 題   Solar is the first energy source in the world. It was in use much earlier before humans even learn how to lighta fire. Many living things are dependent on solar energy from plants, aquatic life, and the animals. The solar ismostly used in generating light and heat. The solar energy coming down to the planet is affected by the orbitalpath of the sun and its variations within the galaxy. In addition, it is affected by activity taking place in space andon the sun. It was this energy that is believed to have been responsible for the breaking of ice during the ice age,which creates the separation of lands and sea.   Solar energy is the alternative energy source that is used most widely across the globe. About 70% of thesunlight gets reflected back into the space and we have only 30% of the sunlight to meet up our energy demands.While the sunlight is used for producing solar energy, it is also used for drying clothes, used by plants during theprocess of photosynthesis, and also used by human beings during winter seasons to make their body warm.   There are two kinds of solar energy, namely, the passive solar energy and the active solar energy. Thepassive solar energy basically uses duration, position, and the intensity of the sun's rays to its advantage in heatinga particular area and also in inducing airflow from an area to the next. The active solar energy uses electricaltechnology and mechanical technology like collection panels in capturing, converting, and storing of energy forfuture use.
   Solar energy does not create any pollution and is widely used by many countries. It is a renewable source ofpower since the sun will continue to produce sunlight all the years. Solar panels, which are required to harnessthis energy can be used for a long time and require little or no maintenance. However, solar energy proves to beineffective in colder regions which don't receive good sunlight. It cannot be used during the night and not all thelight from the sun can be trapped by solar panels. Solar energy's advantages are much more than itsdisadvantages, which makes it a viable source of producing alternative energy
46 Which of the following titles best expresses the main idea of this passage?
(A)Solar Energy: How It Works and Its Limitations.
(B)Solar Energy: Its Advantages and Developments.
(C)Solar Energy: Its Past and Current Developments.
(D)Solar Energy: Why It's Widely Used and Its Future.

參考答案

答案：A
難度：困難0.232143
統計：A(26),B(56),C(25),D(2),E(0)

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