首页
登录
职称英语
In the atmosphere, carbon dioxide acts rather like a one-way mirror—the glas
In the atmosphere, carbon dioxide acts rather like a one-way mirror—the glas
游客
2024-05-04
34
管理
问题
In the atmosphere, carbon dioxide acts rather like a one-way mirror—the glass in the roof of a greenhouse which allows the sun’s rays to enter but prevents the heat from escaping. According to a weather expert’s prediction)the atmosphere will be 3℃ warmer in the year 2050 than it is today, if man continues to burn fuels at the present rate. If this warming up took place, the ice caps in the poles would begin to melt, thus raising sea level several meters and severely flooding coastal cities. Also, the increase in atmospheric temperature would lead to great changes in the climate of the northern hemisphere, possibly resulting in an alteration of the chief food-growing zones.
In the past, concern about a man-made warming of the earth has concentrated on the Arctic because the Antarctic is much colder and has a much thicker ice sheet. But the weather experts are now paying more attention to West Antarctic, which may be affected by only a few degrees of warming: in other words, by a warming on the scale that will possibly take place in the next fifty years from the burning of fuels. Satellite pictures show that large areas of Antarctic ice are already disappearing. The evidence available suggests that a warming has taken place. This fits the theory that carbon dioxide warms the earth.
However, most of the fuel is burnt in the northern hemisphere, where temperatures seem to be falling. Scientists conclude, therefore, that up to now natural influences on the weather have exceeded those caused by man. The question is: Which natural cause has the most effect on the weather?
One possibility is the variable behavior of the sun. - Astronomers at one research station have studied the hot spots and "cold" spots(that is, the relatively less hot spots)on the sun. As the sun rotates, every 27. 5 days, it presents hotter or colder faces to the earth, and different aspects to different parts of the earth. This seems to have a considerable effect on the distribution of the earth’s atmospheric pressure, and consequently on wind circulation. The sun is also variable over a long term; its heat output goes up and down in cycles, the latest trend being downward.
Scientists are now finding mutual relations between models or solar-weather interactions and the actual climate over many thousands of years, including the last Ice Age. The problem is that the models are predicting that the world should be entering a new Ice Age and it is not. One way of solving this theoretical difficulty is to assume a delay of thousands of years while the solar effects overcome the inertia of the earth’s climate. If this is right, the warming effect of carbon dioxide might thus be serving as a useful counter-balance to the sun’s diminishing heat. [br] If the assumption about the delay of a new Ice Age is correct, which of the following statement is true?
选项
A、the best way to overcome the cooling effect would be to burn more fuels
B、ice would soon cover the northern hemisphere
C、the increased levels of carbon dioxide in the atmosphere could warm up the earth even more quickly
D、the greenhouse effect could work to the advantage of the earth
答案
D
解析
细节题。本题涉及对文章最后一段最后一句话的理解If this is right,the warming effect of carbon dioxide might thus be serving as a useful counter-balance to the sun’s diminishing heat.(如果有关太阳光能延缓新冰河时代到来的推测是正确的,那么二氧化碳的温室效应将发挥有效的作用来平衡太阳日益减少的光热。)选项D与此意相符,其他选项概括不全面。因此,答案是D。
转载请注明原文地址:https://tihaiku.com/zcyy/3583836.html
相关试题推荐
Intheatmosphere,carbondioxideactsratherlikeaone-waymirror—theglas
We’vebecomearathergerm-phobic(恐惧症的)society,whatwithourantibacterial
We’vebecomearathergerm-phobic(恐惧症的)society,whatwithourantibacterial
We’vebecomearathergerm-phobic(恐惧症的)society,whatwithourantibacterial
Theterm"corporatetransparency"hasbecomeratherfashionable.Thebelief
Theterm"corporatetransparency"hasbecomeratherfashionable.Thebelief
Theterm"corporatetransparency"hasbecomeratherfashionable.Thebelief
Theterm"corporatetransparency"hasbecomeratherfashionable.Thebelief
Theterm"corporatetransparency"hasbecomeratherfashionable.Thebelief
Rainforestsmaystoremuchlesscarbonthanwethought.Itcouldbetimeto
随机试题
ARepresentativeofHouse’stermofofficeintheUnitedStatesistwoyears,wh
Arabiclanguageisoneoftheworld’smostwidelyusedlanguages.Itisthe
高中信息技术《用图像美化网页-为图片建立超链接》 一、考题回顾
评估对象与可比案例除了位置不同,其他条件都相同。评估对象位于市中心,可比案例位于
A.天王补心丹B.朱砂安神丸C.酸枣仁汤D.归脾汤E.六味地黄丸肝血不足之失眠症
俗话说“不要将你的鸡蛋全都放在一只篮子里”。下列选项与该俗语蕴含的道理相吻合的是
某矩形基础底面尺寸为2.0m×2.5m,地基及基础剖面如图所示。原地下水位在地面
可直接抑制凝血因子Xa,并与抗凝血酶Ⅲ结合的抗凝血药是()A.华法林 B.依诺
药物的消除速度主要决定A.最大效应 B.不良反应的大小 C.作用持续时间
(2021年第2批真题)关于桥梁结构受力特点的说法,错误的是()。A.拱式桥
最新回复
(
0
)