48 According to the passage, which of the following statements is true?
(A)Solar energy hasn't been widely used until the past few hundreds of years.
(B)More than 50% of the sunlight can be used to meet up our energy demands.
(C)The passive solar energy proves to be particularly effective in colder regions.
(D)The active solar energy with the help of modern technology can be stored for future use.

   Solar is the first energy source in the world. It was in use使用中 much earlier before humans even learn how to light a fire. Many living things are dependent on solar energy from plants, aquatic水棲、水上 life, and the animals. The solar is mostly used in generating light and heat. The solar energy comeing dow落下、平靜下來 to the planet is affected by the orbital軌道 path of the sun and its variations變更 within the galaxy. In addition, it is affected by activity taking place in space and on 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可替代、可供選擇、非傳統 energy source that is used most widely across the globe. About 70% of the sunlight gets reflected back into the space and we have only 30% of the sunlight to meet up相交，匯合 our energy demand請求、需求. While the sunlight is used for producing solar energy, it is also used for drying clothes, used by plants during the process of photosynthesis光合作用, 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. The passive solar energy basically uses duration持續時間, position, and the intensity of the sun's rays to its advantage in heating a particular area and also in induced誘發;引起 airflow氣流 from an area to the next. The active solar energy uses electrical technology and mechanical technology like collection panels in capturing, converting转变, and storing of energy for future use.
   Solar energy does not create any pollution and is widely used by many countries. It is a renewable source of power since the sun will continue to produce sunlight all the years. Solarpanel小組, （選定）專家小組、儀表板, which are required to harness馬具、系在身上的繩子、甲冑、利用…以產生動力 this energy can be used for a long time and require little or no maintenance工作, 維護，保養. However, solar energy proves to be ineffective不起作用 in colder regions which don't receive good sunlight. It cannot be used during the night and not all the light from the sun can be trapped by solar panels. Solar energy's advantages are much more than its disadvantages, which makes it a  viable可以實施 source of producing alternative energy.