首页
登录
职称英语
[originaltext]The one thing you need to know is that if you were like many who
[originaltext]The one thing you need to know is that if you were like many who
游客
2024-01-23
9
管理
问题
The one thing you need to know is that if you were like many who suffer when the air quality is poor, relief could be just a click away. There’s something called the Air Quality Index, or (3)the AQI, and it keeps track of how clean or populated the air is on a day to day basis. The Environmental Protection Agency calculates the AQI on five major pollutants that are regulated by the Clean Air Act.
Ground level ozone and particle pollution are the greatest threat to human health. The Air Quality Index runs from zero to 500, with 500 being the most unhealthy. (4)Over 100 could be considered unhealthy for sensitive groups. We’re talking about people with asthma as well as heart conditions. Everyone will start feeling the effects of poor air quality when the number reaches 150 or above. Anything over 300 is considered hazardous air quality. It’s encouraged on these high level days to limit your outdoor activities and stay indoors. Exercising outdoors during one of these high level days could result in serious health consequences. So, before you go outside, check the AQI to protect yourself and to have better health.
Questions 3 and 4 are based on the news report you have just heard.
3.What can we know about AQI?
4.When is it unhealthy for sensitive people?
选项
A、When the AQI runs over 150.
B、When the AQI runs over 300.
C、When the AQI runs over 100.
D、When the AQI runs over 250.
答案
C
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3386784.html
相关试题推荐
[originaltext]KatherinelovedFacebook.WithFacebookshecouldstayconnec
[originaltext]KatherinelovedFacebook.WithFacebookshecouldstayconnec
[originaltext]Wildcarrotsprobablyevolvedwiththeotherfloweringplants
[originaltext]W:ThereisnewdataouttodaythatconfirmsthatmanyAmericans
[originaltext]W:ThereisnewdataouttodaythatconfirmsthatmanyAmericans
[originaltext]W:ThereisnewdataouttodaythatconfirmsthatmanyAmericans
[originaltext]M:Hi,Susan.Youarelookingverysmarttoday.W:Ialwayslook
[originaltext]M:Andwhereisthis?W:ThesephotosarefromtheTajMahalinI
[originaltext]M:Andwhereisthis?W:ThesephotosarefromtheTajMahalinI
[originaltext]M:Andwhereisthis?W:ThesephotosarefromtheTajMahalinI
随机试题
Beijing2008:TheFirst4GWirelessOlympicGames?
______thecause,theywereabletoproposetoaremedy.A、FoundB、HavingfoundC
斯特恩(RobertA.M.Stern)从理论上把“现代主义之后”派的主要特征
在某四轴飞行器系统设计中,利用惯性测量单元(IMU)、PID电机控制、2.4G无
根据《建设工程工程量清单计价规范》的有关规定,工程量清单计算时,附墙柱侧面抹灰(
急性白血病与慢性白血病分类根据是A:白血病细胞的分化程度B:白血病细胞的类型
烟气流动的驱动作用包括()。A.烟囱效应 B.浮力作用 C.气体热膨胀作用
某农场建造了面积为150平方米长方形的大棚种植蔬菜,并将其分割为两块长方形区域分
我国中学的德育途径主要有()、()、()、(
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
最新回复
(
0
)