首页
登录
职称英语
There are cockroaches(蟑螂)everywhere on Earth except the places that are cove
There are cockroaches(蟑螂)everywhere on Earth except the places that are cove
游客
2024-08-22
32
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.【T1】
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.
【T2】
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] 【T1】
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://tihaiku.com/zcyy/3730732.html
相关试题推荐
Theworldisfullofwonderfulplaces,bothnaturalandman-made.EasterIsl
Theworldisfullofwonderfulplaces,bothnaturalandman-made.EasterIsl
Theworldisfullofwonderfulplaces,bothnaturalandman-made.EasterIsl
Theworldisfullofwonderfulplaces,bothnaturalandman-made.EasterIsl
Theworldisfullofwonderfulplaces,bothnaturalandman-made.EasterIsl
Theworldisfullofwonderfulplaces,bothnaturalandman-made.EasterIsl
Theworldisfullofwonderfulplaces,bothnaturalandman-made.EasterIsl
Therearecockroaches(蟑螂)everywhereonEarthexcepttheplacesthatarecove
Therearecockroaches(蟑螂)everywhereonEarthexcepttheplacesthatarecove
Therearecockroaches(蟑螂)everywhereonEarthexcepttheplacesthatarecove
随机试题
HetookitasacomplimentwhenItoldhimhisfashionwastoomodernforanyone
TheEuropeanCommunitysaysitwillconsiderusingforce______isneededforpe
已知图示二梁的抗弯截面刚度EI相同,若二者自由端的挠度相等,则P1/P2为:A.
以下()不是邀请潜在卖方供货的采购文件的通称A.承包商初期反应 B.信息
某年3月31日,某市石油化工厂渣油罐发生爆炸火灾事故,波及20m处的两个容积为1
导游语言是( )的结合体。A.思想性 B.科学性 C.趣味性 D.知识性
在双缝干涉实验中,两缝间距离为d,双缝与屏幕之间的距离为D(D>>d),波长为λ
六西格玛管理流程有()。A.界定 B.测量 C.分析 D.
某省公民甲某身患重症,在医院医治多年不见起色。甲某痛不欲生希望了结生命,于是告诉
根据法律规定,一般情况下动产物权的转让,自( )起发生效力。A.买卖合同生效
最新回复
(
0
)