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
51
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
WhosedogwasGelert?
WhosedogwasGelert?
Whywasthehydraulicfuelpumpsealimportantforthespaceshuttle?WhichofthefollowingisNOTtrueaccordingtowhatVoss
Thechiefpointofthesecondparagraphisabout______.WhichofthefollowingstatementsisNOTtrueaboutdryingfood?
Inparagraph1,whenthewriterrecallssomethingsthathappenedbetweenhimandhisfriends,______.Ifyoufollowedtheadvi
Whatarethetwospeakerstalkingabout?
GenerationsofAmericanshavebeenbrought【C1】______tobelievethatagoodbreakfastisimportantforhealth.Eatingbreakfasta
Writeanotice.Yourclassisgoingcamping.WriteanoticewithalistofDosandDon’ts.Thinkofthefollowingthings:
Televisionhaschangedthelifestyleofpeopleineveryindustrializedcountryintheworld.IntheUnitedStates,wheresociolo
Inflationisaneconomicconditionin【C1】______pricesforconsumergoods【C2】______,andthe【C3】______ofmoneyorpurchasingpowe
随机试题
关于审计抽样的表述中,不恰当的是()。
A.Whatkindofmusicdoyoulike?B.Shallwehavesomethingtoeat?C.Seeyoulater.D.Doyouknowif/whetherthereisares
根是指:根结标本的关系中,错误的是:
对结核性渗出性胸膜炎的治疗,下列哪项是最重要的
根尖脓肿与骨膜下脓肿的鉴别点是
阳明头痛的“引经药”应首选()
根据《建设项目环境保护管理条例》的环境保护制度,下列说法正确的是:
项目目标动态控制的第一步是( )。
某商业银行向某企业贷款3000万元人民币,体现了商业银行()的职能。
IETF定义的多协议标记交换(MPLS)是一种第3层交换技术,MPLS网络由(38)组成,负责为网络流添加删除标记的是(39)。
最新回复
(
0
)