首页
登录
职称英语
【B1】 [br] 【B6】 [originaltext] Throughout history man has changed his physical
【B1】 [br] 【B6】 [originaltext] Throughout history man has changed his physical
游客
2023-08-01
19
管理
问题
【B1】 [br] 【B6】
Throughout history man has changed his physical environment in order to improve his way of life. With the tools of technology he has altered many physical features of the earth. He has transformed woodlands into farmland, and made lakes and reservoirs out of rivers for irrigation purposes or hydroelectric power. Man has also modified the face of the earth by draining marshes and cutting through mountains to build roads and railways.
However, man’s changes to the physical environment have not always had beneficial results. Today, pollution of the air and water is an increasing danger to the health of the planet. Each day thousands of tons of gases come out of the exhausts of motor vehicles, smoke from factories pollutes the air of the industrialized areas and the surrounding areas of countryside. The air in cities is becoming increasingly unhealthy.
The pollution of water is equally harmful. In the sea, pollution from oil is increasing and is killing enormous numbers of algae, fish and birds. The whole ecological balance of the sea is being changed. The same problem exists in rivers. Industrial wastes have already made many rivers lifeless.
Conservationists believe that it is necessary for man to limit the growth of technology in order to survive on earth.
选项
答案
increasing
解析
转载请注明原文地址:https://www.tihaiku.com/zcyy/2888649.html
相关试题推荐
[originaltext]Smartphonesdistractattentionandreducelearningbecauseof
[originaltext]Smartphonesdistractattentionandreducelearningbecauseof
[originaltext]Smartphonesdistractattentionandreducelearningbecauseof
[originaltext]InAmerica,mostresearchersconcedethatboysandgirlsare
[originaltext]InAmerica,mostresearchersconcedethatboysandgirlsare
[originaltext]Everyoneissupposedtocheerforgoodguys,andweshouldon
[originaltext]Everyoneissupposedtocheerforgoodguys,andweshouldon
[originaltext]Everyoneissupposedtocheerforgoodguys,andweshouldon
[originaltext]M:Hi,there!I’vecometoseetheflat.MynameisMarkAdams.W
[originaltext]M:Hi,there!I’vecometoseetheflat.MynameisMarkAdams.W
随机试题
Whatledtohisresignation?[br][audioFiles]2020m2x/audio_etrktzm_027_202002[
Thechurchis______onthehillside,aboutamilefromthetown.A、situatedB、lied
A.不存在 B.仅含一个非零解向量 C.含有二个线性无关解向量 D.含有三
在Excel中,用户选定一列数据后,可以通过单击工具栏的“自动求和”工具进行求和
道德只是人们的行为准则,不能作为评价人们思想和行为的标准。( )
原发性肝癌最常见的表现是A.进行性肝肿大 B.脾肿大、黄疸 C.肝区疼
肾上腺皮质球状带分泌的是A.性激素 B.糖皮质激素 C.去甲肾上腺素 D.
B前一组图形是第一个图形移到第二个图形的右侧,所以应选B。
清宣止咳颗粒主治A.小儿外感风热所致的咳嗽 B.小儿风寒外束,肺寒咳痰清稀
设β1,β2是线性方程组Ax=b的两个不同的解,α1、α2是导出组Ax=0的基础
最新回复
(
0
)