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
All over the world, forests are safeguarding the health of the planet itself. They do this【C1】______protecting the soil, providi
All over the world, forests are safeguarding the health of the planet itself. They do this【C1】______protecting the soil, providi
admin
2011-03-01
90
问题
All over the world, forests are safeguarding the health of the planet itself. They do this【C1】______protecting the soil, providing water and【C2】______the climate. Trees【C3】______soil to mountainsides. Hills【C4】______the trees have been felled lose 500 times as【C5】______soil a year as those with trees.
Trees catch and【C6】______rainwater. Their leaves break the impact【C7】______the rains, robbing them of【C8】______destructive power. The roots of trees allow the water to go into the soil,【C9】______gradually releases it to flow down rivers and refill ground-water reserves. Where there are no【C10】______, the rains run in sheets of water off the land,【C11】______the soil with there Land【C12】______with trees and other plants【C13】______20 times more rainwater than【C14】______earth. As they grow, trees absorb carbon dioxide, the main【C15】______of the "greenhouse effect", which【C16】______irreversibly to change the world’s climate. Together, the world’s trees, plants and soils contain three times as much carbon as【C17】______is in the atmosphere.
The world’s forests【C18】______the vast majority of its animal and plant species. The tropical rainforests【C19】______have well over half of them,【C20】______they cover only about 6% of the Earth’s land surface.
【C18】
选项
A、contains
B、are containing
C、contained
D、contain
答案
D
解析
考查时态。句子主语是forests,是复数形式,表示的又是一种一般现象,因此要用现在时态 contain。注意contain不用于进行时态。
转载请注明原文地址:https://kaotiyun.com/show/5Fkd777K
本试题收录于:
公共英语三级笔试题库公共英语(PETS)分类
0
公共英语三级笔试
公共英语(PETS)
相关试题推荐
Whatdoesthewomanimply?
Yougototherailwaystationtomeetoneofyourfriends,XiaoYang,andthetrainhasnotarrivedyet.Butyouhavesomeurgen
Whatarethetwospeakerstalkingabout?
GenerationsofAmericanshavebeenbrought【C1】______tobelievethatagoodbreakfastisimportantforhealth.Eatingbreakfasta
Whydidthemangiveupstudyingphysics?
Whydidthemangiveupstudyingphysics?
Inflationisaneconomicconditionin【C1】______pricesforconsumergoods【C2】______,andthe【C3】______ofmoneyorpurchasingpowe
Inflationisaneconomicconditionin【C1】______pricesforconsumergoods【C2】______,andthe【C3】______ofmoneyorpurchasingpowe
Whyaremothersfedupwiththeirjobs?
随机试题
下列哪些操作可以实现选区的羽化?
A.胰岛素B链28位的脯氨酸被门冬氨酸取代(ASPB28)B.将胰岛素B链28位的脯氨酸与29位的赖氨酸次序颠倒(LysB28ProB28)C.将胰岛素A链21位的门冬氨酸换成甘氨酸,并在B链C末端加两分子精氨酸D.在胰岛素B
下列哪项提示门静脉高压?()
外汇期货空头套期保值是指在现汇市场处于空头地位的人,为防止汇率上升带来的风险,在期货市场上买进外汇期货合约。()
在企业债券发行的具体申报上,仍然采取()方式报送国家发改委。
产品成本计算方法的综合应用体现在()。
下面哪个是网络的IP地址?()
色彩的冷暖对比能使色彩明快、活泼,红色的对比色是()。
简述社会公德的基本行为准则。
ManyworkerswhoworkedintheWorldTradeCenteraftertheSeptembereleventhattacksbecamesick.Theybreathedamixofdust,
最新回复
(
0
)