首页
登录
职称英语
There are cockroaches (蟑螂) everywhere on Earth except the places that are co
There are cockroaches (蟑螂) everywhere on Earth except the places that are co
游客
2023-10-14
5
管理
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. [br] Cockroaches do not live in places where it is ______.
选项
答案
too cold
解析
本文第一段谈到蟑螂无所不在,except the places that are covered with ice,除了冰雪覆盖之地,说明它们怕冷。
转载请注明原文地址:https://tihaiku.com/zcyy/3097055.html
相关试题推荐
Whatnumberreplacesthequestionmark?[img]2012q2/ct_eyyjscz2011b_eyyjsciq_012
Whatnumberreplacesthequestionmark?[img]2012q2/ct_eyyjscz2011b_eyyjsciq_012
TheBritishParliamenthasallpowersexcepttherightto______.A、controltaxat
Allofthefollowingfourexcept______arethemostfamousdramatistsintheRe
各级领导人毫无例外,都不应滥用职权。(withoutexception)Leadersatvariouslevelswithoutexceptio
Detectivestoriesarepopulareverywhereandsomeoftheworld’sbest-sellin
Atypisttypesfourenvelopesandfourletters.Sheplacesthelettersintheen
Atypisttypesfourenvelopesandfourletters.Sheplacesthelettersintheen
Atypisttypesfourenvelopesandfourletters.Sheplacesthelettersintheen
ThemainthemeofEmilyDickinsonisthefollowingexcept______.A、friendshipB、l
随机试题
WhereHaveAllthePeopleGone?German
CultureShockA)BecauseI’velivedinChinaforalongtime,localsoft
A.晨尿 B.随机尿 C.餐后尿 D.3小时尿 E.清洁中段尿适用于尿液
2011年是中国共产党成立__________周年。
根据《上市公司行业分类指引》,下列说法正确的是()。A、确定行业归属后,在没有发
既能破血祛瘀,又能行气止痛的药物是A.土鳖虫 B.延胡索 C.三棱 D.牛
患者王某,47岁,工人,脊髓损伤致腰以下截瘫后一周转入,患者意识清醒,大小便失禁
事业部制结构的不足在于()。A.管理人员增多,企业费用增加 B.容易造成
脘腹坚满,青筋显露,腹内积块痛如针刺,面颈部赤丝血缕,是为A.气臌 B.水肿
A.胖嫩舌 B.齿痕舌 C.瘦薄舌 D.裂纹舌 E.芒刺舌脏腑火盛,热
最新回复
(
0
)