首页
登录
学历类
Many people use wood stoves and fireplac
Many people use wood stoves and fireplac
最全题库
2022-08-02
16
问题
Many people use wood stoves and fireplaces to heat their homes.Scientists have become worried about the smoke that they give off.Harmful chemicals are in the smoke.The smoke is causing air pollution.The pieces of pollution,called soot,are floating in the air.They are too tiny to see.Scientists must use a microscope to see them. Small amounts of soot are safe,but large amounts can be dangerous.The govenment wants to limit this kind of pollution.It may stop people from using their fireplaces. The air is tested every day.When soot levels are high,more than 65 micrograms of soot per cubic meter,factories must stop making smoke.The government thinks that limit should be much lower.Factories produce the most smoke and soot.But the government thinks that all types of burning should be limited.The soot levels from factories and homes could be limited.Home owners may have to install new wood stoves that they comply with the new law.Or,they may not be able to bum on days when the air quality is bad. Residents of some towns are fined if they violate the burning ban.Scientists hope these new regulations will make the air cleaner and less harmful to breathe.Why is the air quality tested every day?A.Just in case someone askB.Scientists like to take testC.Scientists are not very busD.To keep track of pollution level
选项
A.Just in case someone ask
B.Scientists like to take test
C.Scientists are not very bus
D.To keep track of pollution level
答案
D
解析
见第三、四段。科学家每天检测,空气中这种有害颗粒的密度。如果密度高于65毫克/立方米(科学家认为这个标准还应下调),工厂应停止排烟,住宅应停止燃烧壁炉,如果住宅没有安装新型低烟壁炉的话。
转载请注明原文地址:https://www.tihaiku.com/xueli/2672498.html
本试题收录于:
英语专升本题库专升本成考分类
英语专升本
专升本成考
相关试题推荐
Manyyoungpeoplehavestopped______news
InBritain,peoplehavedifferentattitu
InBritain,peoplehavedifferentattitu
InBritain,peoplehavedifferentattitu
InBritain,peoplehavedifferentattitu
InBritain,peoplehavedifferentattitu
InBritain,peoplehavedifferentattitu
InBritain,peoplehavedifferentattitu
Withoutthehelpofpeoplefromeveryc
Peopleenjoytalkingabout“first”.They
随机试题
Inrecentdecades,franchising(专卖店)hasgrownincreasinglypopularandwide
计算价值系数Vi满足( )时,零件实现其功能所分配的成本偏高,或存在过剩的功能
氰化物慢性中毒的主要表现是()A.骨骼肌酸痛 B.周围神经炎 C.智力低
A.平肝息风,补益肝肾B.疏风除湿,清热养血C.凉肝息风,增液舒筋D.疏风清热,
患者,女性,29岁,于1:30顺利分娩一女婴。8:30护理查房,产妇主诉有尿意,
下列企业人力资源计划类型中,将目标定位改善员工知识技能和工作作风的是()。A.人
关于公允价值,下列说法正确的是()。 A.公允价值是内在价值 B.公允价值
金融市场的基本要素包括()。 A.金融市场交易的参与者B.金融工具 C.
某企业为其在建项目再次申请贷款,此时应提交的先决条件文件有()。A.工程检验师
关于沟通障碍的说法,正确的有( )。(2015真题)A.从信息发送者的角度看
最新回复
(
0
)