首页
登录
职称英语
[originaltext] Would the world really be so much better off if there were no
[originaltext] Would the world really be so much better off if there were no
游客
2024-03-03
50
管理
问题
Would the world really be so much better off if there were no dust? The answer is in some ways, yes, in some ways, no. What is dust anyway? It consists of particles of earth, or other solid matter, which are light enough to .be raised and carried by the wind. Where do these particles come from? They might come from dead plants and animal matter, from sea salt, from desert or volcano sand and from ashes. For the most part, dust is not a very desirable or beneficial thing. But in one way, it helps make the world more beautiful. The lovely colors of the dawn depend to a great extent on the amount of dust that is present in the air. Particles of dust in the upper air reflect the sun’s rays. This makes its light visible on earth an hour or two after sunset. But different colors which make up the sun light are bent .at different angles as they are reflected by the dust and water steam particles. Sunsets are red, because these particles bent the red rays of the sun in such a way that they are the last rays to disappear from view. Another useful function of dust has to do with ram. The vapor water in the air would not become a liquid very readily, if it did not have the dust particles serving as centers for each drop of water. Therefore, clouds, mist, fog and rain are largely formed of an infinite number of moisture particles of dust.
选项
A、The world would be more beautiful.
B、The earth would become less visible from the moon.
C、The sunrise and sunset would lose their beauty.
D、The sunrise and sunset would become more enjoyable.
答案
C
解析
[听力原文]
What would happen if there were no dust?
根据四个选项中都有would,可推测问题询问“可能会……”。本题关键句为“The lovely colors...is present in the air.”黎明时分天空中缤纷色彩主要是由空中存在的大量灰尘所生成的。“Sunsets are red, ...disappear from view.”落日是红色的,是因为这些灰尘颗粒折射了阳光中的红色射线。因此可知如果没有灰尘日升日落就失去了美丽。故正确答案为C)。
转载请注明原文地址:http://tihaiku.com/zcyy/3503110.html
相关试题推荐
[originaltext]InFebruarylastyear,mywifelostherjob.Justassuddenly
[originaltext]InFebruarylastyear,mywifelostherjob.Justassuddenly
[originaltext]Time!Ithinkalotabouttime.Andnotjustbecauseit’sthe
[originaltext]Time!Ithinkalotabouttime.Andnotjustbecauseit’sthe
[originaltext]M:MissJones,couldyoutellmemoreaboutyourfirstjobwithh
[originaltext]Whencouplesgetmarried,theyusuallyplantohavechildren.
[originaltext]Whencouplesgetmarried,theyusuallyplantohavechildren.
[originaltext]Obtaininggoodhealthinsuranceisarealnecessitywhileyou
[originaltext]Obtaininggoodhealthinsuranceisarealnecessitywhileyou
[originaltext]KatherineGramgraduatedfromtheUniversityofChicagoin19
随机试题
Amajorreasonforconflictintheanimalworldisterritory.Themaleani
[originaltext]Phonebookshavewhite,blueandyellowpages.Thewhitepage
太极拳(Taijiquan)是中华民族的宝贵财富,是东方文化的重要组成部分。作为中国古老的武术(martialarts)之一,其主要功能是武术攻防、锻炼
属于设计物的是()A.海洋 B.家具 C.山川 D.树木
A.医药用毒性药品 B.放射性药品 C.二类精神药品 D.一类精神药品
57岁妇女,绝经3年,近2个月出现少量阴道流血,伴下腹胀痛。妇科检查:阴道无异常
患者,女,23岁,今晨起床时突然发生左下腹部剧痛伴恶心、呕吐。体温37.6℃,检
闭卷考试时,学生在头脑中呈现问答题答案的心理活动属于()。A、识记 B
电子邮政系统的功能框架结构包括()。A:物流配送 B:电子邮局 C:网络平台
某锻造项目,夜间声环境质量的评价量应包括( )。A.夜间等效声级 B.最大A
最新回复
(
0
)