[单项选择]Passage Two

Climatic conditions are delicately adjusted to the composition of the Earth’s atmosphere. If there were a change in the atmosphere for example, in the relative proportions of atmosphere gases the climate would probably change also. A slight increase in water vapor, for instance, would increase the heat-retaining capacity of the atmosphere and would lead to a rise in global temperatures. In contrast, a large increase in water vapor would increase the thickness and extent of the cloud layer, reducing the amount of solar energy reaching the Earth’s surface. The level of carbon dioxide, CO2, in the atmosphere has an important effect on climatic change. Most of the Earth’s incoming energy is short wavelength radiation, which tends to pass through atmospheric CO2 easily. The Earth, however, reradiates much of the A. explaining the effects that the burning of fossil fuels might have on climate B. illustrating the effects of CO2 on atmospheric radiation C. discussing effects that changes in the CO2 level in the atmosphere might have on climate D. challenging hypotheses about the effects of water vapor and CO2 on climate 查看答案 更多"Passage Two Climatic cond"的相关试题: [单项选择]Passage Two Climatic conditions are delicately adjusted to the composition of the Earth’s atmosphere. If there were a change in the atmosphere for example, in the relative proportions of atmosphere gases the climate would probably change also. A slight increase in water vapor, for instance, would increase the heat-retaining capacity of the atmosphere and would lead to a rise in global temperatures. In contrast, a large increase in water vapor would increase the thickness and extent of the cloud layer, reducing the amount of solar energy reaching the Earth’s surface. The level of carbon dioxide, CO2, in the atmosphere has an important effect on climatic change. Most of the Earth’s incoming energy is short wavelength radiation, which tends to pass through atmospheric CO2 easily. The Earth, however, reradiates much of the A. Why are projections of the effects of changes in water vapor levels on the climate so inaccurate B. What are the steps in the process that takes place as CO2 absorbs long wavelength radiation C. How might our understanding of the greenhouse effect be improved if the burning of fossil fuels were decreased D. What might cause a series of regular increases and decreases in the amount of CO2 in the atmosphere 查看答案 [单项选择]Passage Four Two equally brilliant scientists apply for a prestigious research fellowship awarded by a top scientific organization.One is white,the other black.Does the color of their skin matter Most scientists will already be screaming a resounding “no”. Those who progress in science do so because of their work, not their pigmentation. Science is meritocratic and objective. It must therefore be rigorously color-blind and shun both racial discrimination and affirmative action. Well,let’s think about this.If science really is so meritocratic,where are all the black Nobel prizewinners and fellows of the Royal SocietyThe black chairs of government scientific panelsThe black Richard Dawkinses and Susan GreenfieldsWhen Newsweek magazine recently surveyed Europe’s largest 100 copanies,it was shocked to unrearth only six board members of non-European racial origin. One shudders to thinks what a similar survey of upper echelons of European science would reveal. Even th A. it is color-blind B. it is racially discriminative C. it awards wrong research workers D. it is practiced by the white exclusively 查看答案 [单项选择] Passage 1 Two main techniques have been used for training elephants, which we may call respectively the tough and the gentle. The former method simply consists of setting an elephant to work and beating him until he does what is expected of him. Apart from any moral considerations this is a stupid method of training, for it produces a resentful animal who at a later stage may well turn man-killer. The gentle method requires more patience in the early stages, but produces a cheerful, good-tempered elephant who will give many years of loyal service. The first essential in elephant training is to assign to the animal a single mahout who will be entirely responsible for the job. Elephants like to have one master just as dogs do, and are capable of a considerable degree of personal affection. There are even stories of half- trained elephant A. can have unpleasant consequences later B. is the most effective method available C. increases the time it takes to tram the animal D. ensures loyal service for years to come 查看答案 [单项选择] Passage Two A. To maintain a high heart rate for the longest duration. B. To reach and maintain your target heart rate for the entire exercise. C. To burn calories as efficiently as possible. D. To maximize your heart rate and get rid of extra fat. 查看答案 我来回答: 提交 最新试题 ●    [判断题]硫酸对人体和设备有危险,稀释时要向水中加酸,并搅拌,不能向酸中加水,以防飞溅。(　　) ●    河北某县以盛产优质红枣闻名遐迩。王甲、王乙、王丙三兄弟分别住在河北廊坊市、承德市和承德滦乎县。3人合 ●    [单选题]CTC车站子系统中涉及远程通信的设备包括（ ）。 ●    根据合伙企业法律制度的规定，合伙企业存续期间，下列行为中，必须经全体合伙人一致同意的有( )。 ●    [单选题] 列车分部运行，机车进入区间挂取遗留车辆时，应从车列前方距离不小于（ ）处防护。 ●    做好保险消费者合法权益保护工作的重要意义表现为（） 网站地图 我要搜题网  版权所有  ©2023  湘ICP备18016427号   购买搜题卡查看答案 [会员特权] 开通VIP， 查看 全部题目答案 [会员特权] 享免全部广告特权 推荐91天 ¥36.8 ￥80元 31天 ¥20.8 ￥40元 365天 ¥88.8 ￥188元 请选择支付方式 微信支付 支付宝支付 点击支付即表示同意并接受了《购买须知》 立即支付 系统将自动为您注册账号 已有账号登录 找回账号密码 请使用微信扫码支付 订单号： 请不要关闭本页面，支付完成后请点击【支付完成】按钮 支付完成 取消支付 恭喜您，购买搜题卡成功 系统为您生成的账号密码如下： 账号 密码 重要提示：请拍照或截图保存账号密码！ 我要搜题网官网：https://www.woyaosouti.com 我已记住账号密码