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
2024-08-08
41
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 can ______ because they carry bacteria.
选项
答案
be very dangerous/hurt human beings
解析
文章的第四、五段谈到蟑螂的一个最主要的问题就是会携带病菌,将疾病传染给人类,这在医院里尤为有害。
转载请注明原文地址:https://tihaiku.com/zcyy/3711675.html
相关试题推荐
Therearecockroaches(蟑螂)everywhereonEarthexcepttheplacesthatareco
Therearecockroaches(蟑螂)everywhereonEarthexcepttheplacesthatareco
Therearecockroaches(蟑螂)everywhereonEarthexcepttheplacesthatareco
Therearecockroaches(蟑螂)everywhereonEarthexcepttheplacesthatareco
ThefollowingstatementsaboutthemagazineNewScientististrueEXCEPT______.
ThefollowingstatementsaboutthemagazineNewScientististrueEXCEPT______.
ThefollowingstatementsaboutthemagazineNewScientististrueEXCEPT______.
TheNaziregimeis______ofallthemeandprincipleexceptappetiteandracialdo
Iwouldhavegonetothelecturewithyou______Iwassobusy.A、exceptthatB、pr
Iwouldhavegonetothelecturewithyou______Iwassobusy.A、exceptthatB、pr
随机试题
TheEnglishpoet______isbestknownforhisworksTheCanterburyTales.A、Willi
SolarPowerThesunis【T1】______.It【T2】______.Peoplehavecreateddiff
WilkinsMicawberisacharacterinthenovel______,aneternaloptimistwho,de
中国居民营养调查中每次膳食调查的时间应不少于A.4天 B.3天 C.5天
患者女性,81岁,退休干部。冠心病住院治疗,住院前3天与护士们关系融洽。第4天,
图中的文字与哪个历史人物所处时期最为接近? A.武则天 B.王昭君 C.西
儿童能以命题形式思维,则其认知发展已达到( )。A、感知运动阶段 B、前运算
商品归类题 牛骨制成的梳妆用梳子(2002年)()
纳税人的下列行为中,应当按纳税人同类应税消费品的最高销售价格作为计税依据计征消费
酵(臭)米面食物中毒的病原物质为A.外毒素 B.米酵菌酸 C.组胺类物质
最新回复
(
0
)