首页
登录
职称英语
[originaltext] We experience different forms of the Sun’s energy every day.
[originaltext] We experience different forms of the Sun’s energy every day.
游客
2023-07-10
59
管理
问题
We experience different forms of the Sun’s energy every day. We can see its light and feel its warmth. The Sun is the major source of energy for our planet. It causes the evaporation 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 on the Earth.
Much of the energy that comes from the Sun never reaches the Earth’s surface. It is either reflected or absorbed by the gases in the upper atmosphere. 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, approximately 0.023%, 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. These gases act like the glass of a greenhouse 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. The amount reflected depends on the surface. 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-colored surfaces, such as dark soil or forest, absorb more energy and help warm the surrounding air.
Questions 19 to 21 are based on the passage you have just heard.
19. What is the root cause for weather changes on the Earth according to the passage?
20. Why does only a small part of the Sun’s energy reach the Earth’s surface?
21. What do we learn from the passage?
选项
A、Most of it is lost in the upper and lower atmosphere.
B、Most of it is reflected by the gases in the upper atmosphere.
C、Most of it is absorbed by the clouds in the lower atmosphere.
D、Most of it is used to evaporate water from the oceans and lakes.
答案
A
解析
由选项中重复出现的Most of it is及lost,reflected,absorbed,used to evaporate和atmosphere可推断,it指代energy from the sun,故本题很可能考查太阳射向地球的大部分能量受大气层的影响而无法到达地球表面的原因。短文中提到It is either reflected or absorbed by the gases in the upper atmosphere.Of the energy that reaches the lower atmosphere,30% is reflected by clouds or the Earth’s surface,也就是说太阳的能量被上层大气反射或吸收,当剩下的能量穿过低大气层时,有30%的能量被云或地球表面反射出去,最后只剩下一小部分到达地面,故答案为A)。选项中的it指的是energy from the sun。注意短文给出的数字对选择答案起关键作用。
转载请注明原文地址:https://tihaiku.com/zcyy/2823458.html
相关试题推荐
[originaltext]W:Haveyousavedenoughtobuythatnewprinterforyourcomputer
[originaltext]W:Haveyousavedenoughtobuythatnewprinterforyourcomputer
[originaltext]WhenIwasgrowingupinAmerica,Iwasashamedofmymother’
[originaltext]WhenIwasgrowingupinAmerica,Iwasashamedofmymother’
[originaltext]WhenIwasgrowingupinAmerica,Iwasashamedofmymother’
[originaltext]BobbyMoorewasafamousEnglishsoccerplayerwholedtheEn
[originaltext]BobbyMoorewasafamousEnglishsoccerplayerwholedtheEn
[originaltext]W:Oh,Ken,Ihavebeenmeaningtotalktoyou.M:Hi,Denise!Wh
[originaltext]M:Wanttogooutandgetsomethingtoeat?W:Ican’t.Ihavea
[originaltext]W:Hey,I’vemanagedtogetanextraticketfortheconcertthis
随机试题
Thenovel______bySamuelRichardsonisconsideredthefirstEnglishpsycho-ana
HowtoBondwithYourBossHavingagoodrelationshipwith
[audioFiles]audio_ehbm_j20002(20082)[/audioFiles]A、Themanwasquiteallright.
A.尿沉渣有多数正常形态红细胞 B.尿中可见嗜酸性粒细胞 C.尿钠>20mm
瘀血阻滞于机体某些局部时,多见的舌象表现是A.全舌青紫 B.舌有紫色斑点 C
截至2018年底,中国人工智能市场规模约为238.2亿元,同比增长率达到56.6
诊断左心室肥大的最基本条件是()A.电轴左偏 B.左室高电压 C.V、
各种运输方式内外部的各个方面的构成和联系,就是( )。 A.运输系统
内部招募的优点不包括( )。A.选择余地大 B.适应较快 C.准确性
根据《中华人民共和国行政处罚法》,行政处罚的种类包括A.警告 B.罚款 C.
最新回复
(
0
)