首页
登录
职称英语
The environment is everything that surrounds us: plants, animals, buildings
The environment is everything that surrounds us: plants, animals, buildings
游客
2024-10-13
57
管理
问题
The environment is everything that surrounds us: plants, animals, buildings, country, air, water—literally everything that can affect us in any way. The environment of a town, with its buildings and traffic and its noise and smells, where everyone is on top of everyone else, is a far cry from that of the countryside, with its fields and crops, its wild and domestic animals and its feeling of spaciousness. And the environment differs in different parts of the world.
Ecology is the science of how living creatures and plants exist together and depend on each other and on the local environment. When an environment is undisturbed, the ecology of an area is in balance, but if a creature is exterminated or an unfriendly species introduced, then the ecology of the district will upset—in other words, the balance of nature will be disturbed.
Man is a part of the environment and has done more to upset the ecology during his short span on earth than any other living creature. He has done this by his ignorance, his greed, his thoughtless foolishness and wastefulness.
He had poisoned the atmosphere and polluted both land and water. He has squandered the earth’s natural resources with no thought for the future, and has thought out the most savage ways of killing his fellow men—and every other sort of life at the same time.
Since man has done so much damage, it is up to him to try to put matters right—if it is not already too late. If there is to be any remedy for our ills, that remedy ultimately lies in the hands of the young, and the sooner they start doing something about it, the better.
One of the main causes of the earth’s troubles is that the world is overpopulated and that this overpopulation is growing at an ever increasing rate. At the same time we are using up our natural resources—fuels and mineral ores—at an ever increasing rate with no hope of replacing them.
For many years the earth has been unable to provide enough food for these rapidly expanding populations and the position is steadily worsening since the fertility of some of our richest soils has been lost and vast areas that were once fertile lands have turned into barren deserts. And the trouble with deserts is that they tend to creep outwards on to the fertile soils. What is now the northern Sahara Desert was the cradle of the civilized world 2,500 years ago.
Even at this moment many of the earth’s natural treasures are being destroyed. Many valuable animals and plants are being killed off, and it is becoming increasingly difficult to grow enough food to preserve much of the earth’s population from starvation. The situation is getting out of hand. Time is running out. But with your help, we may be able to reserve the trends which threaten our very existence. [br] The ecological balance depends on
选项
A、the preservation of environment.
B、plants and animals.
C、the introduction of a variety of species.
D、natural resources.
答案
A
解析
细节题。根据第二段提到的“When an environment is undisturbed,the ecology of an area is in balance.”(在环境不受破坏的情况下,这一地区的生态就处于一种平衡状态。)可以看出生态平衡取决于环境的保护,故选A
转载请注明原文地址:https://tihaiku.com/zcyy/3799323.html
相关试题推荐
_________menhavelearnedmuchfromthebehaviorofanimalsishardlynew.A、Tha
Bycuttingdowntreeswe______thenaturalhomeofbirdsandanimals.A、harmB、h
Everythingisready,______?A、isn’titB、aren’ttheyC、isitD、aretheyA此题考查反意疑
Theenvironmentiseverythingthatsurroundsus:plants,animals,buildings
Theenvironmentiseverythingthatsurroundsus:plants,animals,buildings
Theenvironmentiseverythingthatsurroundsus:plants,animals,buildings
Theenvironmentiseverythingthatsurroundsus:plants,animals,buildings
Weintendedto______youtomakeaspeechonenvironmentalprotectioninourun
Fondofsingingassheis,sheis______agoodsingerbyprofession.A、everything
Pleasedon’t______toomuchonthepainfulmemories,Everythingwillbeallrig
随机试题
小学语文《一幅名扬中外的画》主要教学过程及板书设计 教学过程 (一)图片导入 老师展示清明上河图的图片,并加上引导语,导入新课。 同学们,走进第五单元,
工程项目资源是对项目中使用的人力资源、材料、机械设备、技术、资金和基础设施等的总
洪先生,男,48岁,公交车司机,高血压病史2年,服药依从性不好,晚餐常常饮酒(平
患者女,47岁。突发右侧眼睑下垂2天。查体:神清,右侧眼睑下垂,右眼视力0.9,
卵巢肿瘤手术治疗,下列哪项是错误的A.凡良性病变的年轻患者均应保留一侧卵巢 B
2020年,全年货物进出口总额321557亿元,比上年增长1.9%。其中,出口1
下列关于内在价值的含义表述正确的有()。A:内在价值是一种相对“客观”的价格
A.八纲辨证 B.表里辨证 C.阴阳辨证 D.寒热辨证 E.虚实辨证辨别
A.PTK B.cGMP C.IP D.肾上腺素 E.cAMP具蛋白激酶
甲企业采用“2/30,n/60”的现金折扣条件,销售收入为1000万元,有20%
最新回复
(
0
)