首页
登录
职称英语
[originaltext] In urban areas, car produces thousands of tones of lead in the
[originaltext] In urban areas, car produces thousands of tones of lead in the
游客
2023-12-23
71
管理
问题
In urban areas, car produces thousands of tones of lead in their exhaust fumes. In some large cities, the amount of lead in the air and soil is more than a thousand times than the natural level.
For instance, in Singapore lead can affect the children in many ways. The most obvious way is through the exhaust fumes of cars. This means that people who live near busy roads, and especially those on the lower floors are most at risk. It is quite likely that the whole central part of Singapore is polluted by lead from this source. Another source is lead water pipes. Because it flows through the pipes, the water dissolves lead and carries it to household taps. In industrial waste lead is also present. After flowing into the sea, the lead is absorbed by fish, crabs which are eaten by human beings.
Slow poisoning by lead affects the brain too. It makes the victim inactive. He becomes irritable and may even become violent. Lead attack the bones of young people and upsets their nervous system. Victims are far more likely to daydream than other children. And they have great difficulty concentrating on anything for very long. One expert said that she had taught children in the center of city. in the suburbs and in the countryside. She found that rural children who are less affected by lead had a better attitude to their studies and were easier to teach and control.
Only about three decades ago, doctors began to discover just how dangerous lead can be. In many countries, governments are now urged to ban the use of petrol containing lead. In the USA, there were 2700 cases of severe lead poisoning in 1970, but this fell to 300 in 1977 when more areas used lead-free petrol.
Questions:
23.In Singapore children can, be affected by lead in many ways which of the following is NOT mentioned in the talk?
24.Which of the following is not the symptoms when the brain is affected?
25.When did people discover the great danger of lead, according to this talk?
26.How can we prevent the lead pollution?
选项
A、Don’t use any product containing lead.
B、Move out of the urban areas to the countryside.
C、Eat less fish, crabs and vegetables.
D、Stop using the petrol containing lead.
答案
D
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3299269.html
相关试题推荐
AlthoughtherearemanyskillfulBraillereaders,thousandsofotherblindp
AlthoughtherearemanyskillfulBraillereaders,thousandsofotherblindp
AlthoughtherearemanyskillfulBraillereaders,thousandsofotherblindp
AlthoughtherearemanyskillfulBraillereaders,thousandsofotherblindp
AlthoughtherearemanyskillfulBraillereaders,thousandsofotherblindp
AlthoughtherearemanyskillfulBraillereaders,thousandsofotherblindp
AlthoughtherearemanyskillfulBraillereaders,thousandsofotherblindp
AlthoughtherearemanyskillfulBraillereaders,thousandsofotherblindp
AlthoughtherearemanyskillfulBraillereaders,thousandsofotherblindp
AlthoughtherearemanyskillfulBraillereaders,thousandsofotherblindp
随机试题
Publicopinionisfickleandmoresoinanationlikeourswhereilliteracyand
(l)Ifyou’relikemostpeople,you’rewaytoosmartforadvertising.Youfli
[originaltext]InBritain,ifyouarefoundguiltyofacrime,youcanbese
以下关于质量控制说法正确的是( )A.质量控制是指确定质量方针及实施质量方针的
治疗癥瘕痰湿瘀结证,应首选的方剂是A.苍附导痰丸合桂枝茯苓丸 B.补肾祛瘀
2011年中部地区货物和服务净出口最多的省份是:() A.安徽 B.河南
下列缓解城市中心区交通拥挤和停车矛盾的措施中,正确的有( )。A.设置独立的地
世界各国的课程改革有哪些特点?
加工贸易企业从事加工出口业务中,因不可抗力原因造成损毁导致无法复出口的保税进口料
申请人对具体行政行为不服申请行政复议的,税务行政复议中的被申请人指()。A
最新回复
(
0
)