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
When the weather is hot, you go to a lake or an ocean. When you are near a lake or an ocean, you feel cool. Why? The sun makes t
When the weather is hot, you go to a lake or an ocean. When you are near a lake or an ocean, you feel cool. Why? The sun makes t
admin
2009-08-15
44
问题
When the weather is hot, you go to a lake or an ocean. When you are near a lake or an ocean, you feel cool. Why? The sun makes the earth hot, but it cannot make the water very hot. Although the air over the earth becomes hot, the air over the water stays cool. The hot air over the earth goes up. Then the cool air over the water moves in and takes the place of the hot air. When you are near a lake or an ocean, you feel the cool air when it moves in. You feel the wind. And the wind, makes you cool.
Of course, scientists cannot answer all of our questions. If we ask, "Why is the ocean full of salt.?" scientists will say that the salt comes from rocks. When a rock gets very hot or very cold, it cracks (裂开). Rain falls into the cracks. The rain then carries the salt into the earth and into the rivers. The rivers carry the salt into the ocean. But then we ask, "What happens to the salt in the ocean.’? The ocean does not get more salty every year." Scientists are not sure about the answer to this question.
We know a lot about our world, but there are still many answers that we do not have, and we are curious.
选项
A、Scientists can explain many things, but not everything.
B、The sun cannot make the water very hot.
C、Scientists know everything.
D、You feel cool when you are near a lake or an ocean.
答案
A
解析
这篇文章主题就是列举一些问题,说明科学家还不能够完全回答这些问题,这个世界还有很多未知的东西。第二段开头也提到,Of course,scientists cannot answer all of our questions。所以答案是A。
转载请注明原文地址:https://kaotiyun.com/show/c4yd777K
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
______meninventedcertainsoundstoexpressthoughtsandactions.Whichistrueaboutwords?
Accordingtothepassage,______.Fromthepassage,weknowthat______.
Theylayalmostflatand______throughthetubelikeundergroundpassage.
______,hedoesn’talwayslearnwhatheshoulddo.
ForeignteenagerscometoAmericanfamilieswiththepurposeof______.Inthepast,Straub’sjobwaseasy,because______.
Laser-doppleradar______.Laser-doppleradarisespeciallyvaluableinspacemissionsbecauseit______.
Inalmosteverybiguniversity(大学)intheU.S.A,footballisafavouritesport.Americanfootballisnotlikesoccer.Playersso
Theweatherturnedouttobeverygood,______wasmorethanwecouldexpect.
Weather______,we’llgooutforawalk.
WebbwasengagedinacontractwithShenzhenAirlinesas______.Webbmetachangeableweather,whichhehadnotexperiencedin
随机试题
阅读下面的文字:声音停了一会儿,然后又问下去。“你知道吗?将来你会不再相信你现在这个信仰,你会认为自己受了骗,白白地浪费你的年轻的生命?”“这我也知道。然而我还是要进来。”“进来吧!”姑娘跨进门槛,一幅厚的门帘放下来掩住了她。“傻瓜!”有人在后
月经淋沥不断,色红,伴头晕耳鸣,烦热,腰膝酸软,脉细数无力,最宜诊断为
A.乳牙滞留 B.牙齿迟萌 C.乳牙早萌 D.乳牙早失 E.融合牙婴儿出生时口腔内有一颗小牙齿属于
原形从肾排泄率最高的喹诺酮类药物是()。
原材料采购跟单实务2.对“button”有什么特殊要求?(2分)
社会工作的主要服务领域包括()。
智育是授予学生系统的科学文化知识、技能,发展他们的智力和与学习有关的非认知因素的教育。()
Whomightbethefirstspeaker(theman)?
Thequestionofwhetherwarisinevitableisonewhichhasconcernedmanyoftheworld’sgreatwriters.Beforeconsideringthis
PASSAGETHREEWhatfeaturedelightstheauthormost?
最新回复
(
0
)