首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
We experience different forms of the sun’ s energy every day. The sun is the major source of energy for our planet. It causes th
We experience different forms of the sun’ s energy every day. The sun is the major source of energy for our planet. It causes th
admin
2014-05-25
55
问题
We experience different forms of the sun’ s energy every day. The sun is the major source of energy for our planet. It causes the evaporation(蒸发)of water from the oceans and lakes. Sunlight also provides the energy used by green plants to make their own food.
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 form 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. Dark-colored surfaces, such as dark soil or forest, absorb more energy.
According to the passage, the root cause for weather changes on the earth is______ .
选项
A、the atmosphere surrounding the earth
B、water from oceans and lakes
C、energy from the sun
D、greenhouse gases in the sky
答案
C
解析
事实细节题。由文章第二段the remaining 70% warms…and provides energy for the water cycle and weather.即“剩余的70%给地球表面提供热,促进水蒸发,给水循环和大气循环提供能量”一句可知答案。故选C。
转载请注明原文地址:https://www.kaotiyun.com/show/Y1ud777K
本试题收录于:
公共英语二级笔试题库公共英语(PETS)分类
0
公共英语二级笔试
公共英语(PETS)
相关试题推荐
Whatdidthepersondoeveryday?
【S1】【S3】
WhenPearmanofferedtowashthewindshieldforFred,______.WhathasbecomeofP,earmannow?
请写一封大学入学的申请信,请描述自己的毕业院校,毕业时间,工作状况,并且指明你想读的专业。注意:1.表达清楚。2.字数110~120之间。
--"Iwonderiftheseshirtssuityou?"--"Wouldyoupleaseshowme?"
Thenewlawwillcomeinto______onthedayitispassed.
Therearestockmarkets(股票市场)inlargecitiesinmanycountries.Thestockexchangeisaplacewherepeoplecanbuyorsellshar
—______areyoutryingtoprovetopolice?—WhereIwaslastnight.
ThoughWalesisvisitedmainlyforitsbeautifulscenery,ancientcastlesandcharmingsea-sideresorts,thefourthmostpopular
ItwasinChina______theagreementwassigned.
随机试题
阿托品抗休克的主要机制是
A、胃十二指肠溃疡出血B、胃癌出血C、食管静脉曲张破裂出血D、应激性溃疡出血E、胆道出血患者间断呕血、黑便2周,发作时伴右上腹剧痛,巩膜轻度黄染。最可能的诊断是()
A.0.02%B.005%C.0.2%D.0.5%E.1%为了预防学校儿童龋病的发生,使用氟化钠溶液漱口每周1次的浓度是
各类型休克的根本变化是()
在构建证券投资组合时,投资者需要注意( )。
关于法定单位和词头的使用规则,下列说法正确的是()。
《关于建国以来党的若干历史问题的决议》的主要内容是()。
给定资料1.城镇化的直接表现形式就是农村人口向城镇集中,在此过程中农村人口比重减少,农民成为产业工人或以其他方式成为城市居民,这也是促进产业结构、就业结构以及生产、生活方式等变化的重要因素。产业发展,是城镇化演进的重要基础。随着人口向城镇集
A、 B、 C、 D、 D
Mr.Greyhastwosons,______arefamousdancers.
最新回复
(
0
)