Question

【題目】根據(jù)短文內(nèi)容，從短文后的選項中選出能填入空白處的最佳選項。選項中有兩項為多余選項。

We experience different forms of the Sun’s energy every day. We can see its light and feel its warmth. __【1】___. It causes the evaporation (蒸發(fā)) of water from the oceans and lakes. Sunlight also provides the energy used by green plants to make their own food. These green plants then provide food for all organisms(生物) on the Earth.

Much of the energy that comes from the Sun never reaches the Earth’s surface.__ 【2】__. Of the energy that reaches the lower atmosphere,30% is reflected by clouds or the Earth’s surface. The remaining 70% warms the surface of the planet, causes water to evaporate, and provides energy for the water cycle and weather. Only a tiny part, _【3】___, is actually used by green plants to produce food.

Many gases found in the atmosphere actually reflect heat energy escaping from the Earth’s surface back to the Earth. ___【4】__ in that they allow energy from the Sun to enter but prevent energy from leaving. They are therefore called greenhouse gases.

When sunlight strikes an object, some of the energy is absorbed and some is reflected. _【5】__. For example, you’ve probably noticed how bright snow is when sunlight falls on it. Snow reflects most of the energy from the Sun, so it contributes to the low temperatures of winter. Dark-coloured surfaces, such as dark soil or forest, absorb more energy and help warm the surrounding air.

A.It is either reflected or absorbed by the gases in the upper atmosphere.

B.approximately 0.023%

C.These gases act like the glass of a greenhouse

D.greenhouse gases allow heat energy to escape from the Earth's surface

E.The amount reflected depends on the surface.

F.The Sun is the major source of energy for our planet

G. they reflect heat energy escaping from the earth back to the earth's surface.

Answer 1

【答案】

【1】F

【2】A

【3】B

【4】C

【5】E

【解析】

試題分析: 太陽是太陽系中唯一的恒星和會發(fā)光的天體，是太陽系的中心天體。本文介紹了太陽對我們的重要作用，詳細(xì)講述了太陽光對地球的影響等信息

【1】F．細(xì)節(jié)理解題。由小題1空后文，It causes the evaporation (蒸發(fā)) of water from the oceans and lakes. Sunlight also provides the energy used by green plants to make their own food. These green plants then provide food for all organisms(生物) on the Earth.得知水從海洋和湖泊蒸發(fā).日光還給綠色植物提供了可使用的能源……等等。由此得知太陽是我們星球能量的主要來源,The Sun is the major source of energy for our planet,故選F

【2】A. 細(xì)節(jié)理解題。由小題2空后文得知，即從文章第二段首句可知，太陽能只有小部分才能到達(dá)地表，大多被表層大氣所反射或吸收。It is either reflected or absorbed by the gases in the upper atmosphere最符合文意。故選A

【3】B細(xì)節(jié)理解題。由第二段30% is reflected by clouds or the Earth’s surface，the remaining 70% warms the surface of the planet得知大致上，陽光30%被云層吸收，剩余70%熱能給予地球表面。Only a tiny part， approximately 0.023%僅僅只有0.023%才是用于食物生產(chǎn)。故選B

【4】C細(xì)節(jié)理解題。由小題4空后文 in that they allow energy from the Sun to enter but prevent energy from leaving得知其功能是讓熱能進(jìn)入，且阻止熱能散失。these gases act like the glass of a greenhouse這些氣體像一個溫室。故選C

【5】E細(xì)節(jié)理解題。由最后一段第三句后的例子得知，熱能的吸收取決于不同的地表，雪地，深色土壤和森林都會具有影響。The amount reflected depends on the surface，故選E