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
2014-01-10
52
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.(69)
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.
(70)
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.
选项
答案
蟑螂对于医院来说尤其危险。因为医院的所有垃圾都可以成为蟑螂的食物,这些垃圾粘在蟑螂身上,当蟑螂触碰到医院人员的食物时,就将垃圾留到食物上面,而这些垃圾往往携带者致病细菌。
解析
(as在这里引导原因状语从句。)
转载请注明原文地址:https://kaotiyun.com/show/64kK777K
本试题收录于:
D类竞赛(专科)题库大学生英语竞赛(NECCS)分类
0
D类竞赛(专科)
大学生英语竞赛(NECCS)
相关试题推荐
A.unrelatedB.resultsfromC.takesD.fixedE.spendsF.distractedG.completelyH.productivityI.externalJ.with
A.incomeB.polarizationC.transformationsD.oldE.changesF.worseG.relaxedH.therebyI.divisionJ.accompanying
TipsforPlanningaPresentationI.TheculturalstyleofpresentationforEnglishspeakersA【T1】______withonemainidea【T1】___
5WaystoJustEnjoyRetirement1.Thepurposeofthisspeech■Tohelpretireesfind【T1】______inretirement【T1】_
Thechancesofarepetitionoftheseunfortunateeventsare______indeed.
HalloweenIt’sOctoberthe31st,andacrossBritainandtheUSA,/thousandsofchildrenaredressingupasmonsters,gho
AmericanElectionsNationalelectionsareheldintheUnitedStateseverytwoyears./Eachtime,voterselectallmember
Thechildrenwereallowedtodo________theyliked.
Woman;Excuseme!Thisfishsmellsstrange—______Waiter;Itcan’tbe,madam,itwasfreshthismorning.Woman;Well,I’mnot
随机试题
Turnonthetelevisionoropenamagazineandyou______advertisementsshowinghappy,balancedfamilies.
男,35岁,右下肢静脉曲张8年,近几年出现足靴区轻度肿胀、皮肤脱屑、瘙痒、色素沉着、皮炎、湿疹等营养性改变,这一系列症状说明病变发展到
王某从某字画店买得一幅油画作品时原稿,上面没有署名。王某觉得这幅油画某个地方美中不足,又不知到底问题在哪里,于是王某授权在某美术学院任教的秦某对画进行修改。经秦某稍作修改后,王某觉得这幅画已基本上无可挑剔,算得上是画中的精品了。王某遂将这幅油画拿到某书画展
我国金融机构体系的经营主体是()。
市销率估值模型的特点包括()。
《旅行社业务经营许可证》分为()。
感觉适应
中国的邻邦日本,正在遭受“人口少子化”的困境。1999年,日本的总和生育率下降到1.57,被称为“1.57”危机。2006年,这一数字下降到1.04。日本媒体惊呼“少子化已达危害国家兴衰地步”。与此同时,在人口众多的中国,少子化问题也日渐浮现。根据2010
下列关于数罪并罚的表述中,正确的是()。(2010年单选8)
InAmericatherearenonoblesormenofletters,andthecommonfolkmistrustthewealthy.Consequently,【C1】______formthehig
最新回复
(
0
)