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
There are cockroaches (蟑螂) everywhere on Earth except the places that are covered with ice. Scientists have discovered about 3,5
There are cockroaches (蟑螂) everywhere on Earth except the places that are covered with ice. Scientists have discovered about 3,5
admin
2008-10-15
53
问题
There are cockroaches (蟑螂) everywhere on Earth except the places that are covered with ice. Scientists have discovered about 3,500 different species of cockroach. There is just one human species! Cockroaches can be anything in size from about five mm to nine cm. Although five mm is very small, nine cm is as long as a large rat.
It is very difficult to catch most cockroaches. They "see" with the hairs on their bodies. These hairs can feel the smallest movement in the air, so the cockroaches know immediately something moves, and run to safety.
Of all the species of cockroach, fortunately only three live among humans and are a serious problem. They are the German, the Oriental, and the American. One egg case of the German cockroach can produce as many as seven million cockroaches in 12 months!
Our main problem with cockroaches is that not only do they look ugly to us, but they also carry diseases. They are particularly dangerous in hospitals as they eat all kinds of hospital waste or get it on their bodies. They can then carry this waste, which may contain dangerous bacteria, on to food which is then eaten by people in the hospital.
Most of the bacteria that cause food poisoning have been found in the stomachs of cockroaches, so it is important that cockroaches should be kept out of restaurants and other places where food is prepared.
Many people work and try to destroy cockroaches, but as soon as they find one way of doing it, the cockroaches "learn" how to deal with it. Electricity does not always kill them and they can avoid most poisons or "learn" how to deal with others. At one time, scientists thought that radiation would kill them, but they have been on Earth for about 300 million years, and it does not harm them as much as it does us.
It seems probable that when there are no longer human beings living on the Earth, cockroaches will still be here.
Paragraph 6 says that it is very difficult to ______.
选项
答案
kill cockroaches
解析
第六段在谈人类试图对付蟑螂,采取了各种各样的方法,如电击、辐射等,但似乎都不太奏效。
转载请注明原文地址:https://kaotiyun.com/show/dp8K777K
本试题收录于:
A类竞赛(研究生)题库大学生英语竞赛(NECCS)分类
0
A类竞赛(研究生)
大学生英语竞赛(NECCS)
相关试题推荐
Peopleoftenlaughwhentheyseepenguinswalking.Penguinslookveryfunnywaddlefromsidetosideontheirshortlittlelegs.
—CanIbookaroomfromnowtillFriday?—What’stheprice?—$128.75notcountingtheservice.
Threeofthestudentshaveneithertheintelligencenorthediligencetolearntherequiredmaterial;______,theywillbedism
What’stheweatherlikewhereyouare?Chancesarethere’sacloudsomewhereonyourhorizon—acollectionofmillionsofmicrosc
WhatisGlaeser’sopiniontowardscities?
【T1】顶级足球员都有志为顶级球队效力,如今,西班牙、意大利、英格兰和德国联盟的顶级球队都来自全球各个角落的球员组成的。(makeup)有来自南美且多年来在欧洲球队效力的球员,如马拉多纳、罗纳尔多,如今更有来自亚洲、非洲和中东地区的球员。也许最国际化的
【T1】身份盗用是指有人不当获取并使用他人的个人信息:如姓名、生日、驾驶证号码也包括信用卡、银行卡和电话号码信息等导致的犯罪。(referto)这种犯罪意味者欺诈,目的就是获取钱财。盗用身份者采取多种方式获取他人的个人信息,盗取他们的身份。近年来,
Britaindoesn’tsharealandborderwithanyothercountryexcept______.
Althoughtheycouldearnmuchmoney,businessmenusedtoberegardedas______withalowersocialstatuseventhanthatoffarmer
A、Theyputtheirglasseson.B、Theytooktheirglassesoff.C、Theytalkedabouttheweather.D、Theyfinishedtheirfoodanddrin
随机试题
教育规划的目的是()
沃尔玛沃尔玛是全球最大的百货零售商,拥有超过297l家商店,同时拥有538家山姆会员店。公司口号的最后一句是:“谁是第一重要的?顾客。”它通过精简供应链流程和采用低价策略,削弱竞争者而确立了自己在零售业的领导地位,但是它的在线销售战略遇到了主要顾
不属于癌基因产物的是
视神经脊髓炎特征性表现包括
不可能作为利息索赔时采用标准的利率是( )。
在大多数国家的公司法中,都将公司经理视为章程中的()。
企业生产车间发生的固定资产日常维修费,应作为制造费用核算计入产品成本。()
在Excel某列单元格中,快速填充2011~2013年每月最后一天日期的最优操作方法是()
Therearefivebasic【C1】______ofanewspaper:toinform,tocomment,topersuade,toinstructandtoentertain.Youmaywellthi
A.acrossB.shortC.actualD.tentativelyE.alteredF.quickG.correctlyH.preciseI.potentialJ.smallK.substan
最新回复
(
0
)