首页
登录
职称英语
[originaltext]Kennedy: I’ve just found the most useful device at the new out-do
[originaltext]Kennedy: I’ve just found the most useful device at the new out-do
游客
2024-12-13
44
管理
问题
Kennedy: I’ve just found the most useful device at the new out-door store--a water purifier.
Jackie: A water purifier? You want to carry even more equipment with you on our hiking trip?
Kennedy: If it’s light weight and saves work, yes! And this one fits that description.
Jackie: Really? I’d bet it takes up a lot of room.
Kennedy: Not at all. It’s a straw, much like the one you use to drink a soda water or a milkshake.
Jackie: Really? That is small.
Kennedy: Yeah, it, s plastic and has a series of mineral and chemical filters that strains harmful microbes from water.
Jackie: Yes, but how good a job can it do filtering the germs out of stagnant pond water or water from lakes and streams.
Kennedy: It’s fantastic. It makes the water entirely germ-free.
Jackie: But what about salt or chemical pollutants that might be in the water? Does it clean those out?
Kennedy: No, it doesn’t remove salt and chemicals. But those are really not major concerns when we’re out hiking and camping.
Jackie: Mm…How long will a straw last?
Kennedy: For about 100 gallons. But don’t worry about measuring that large amount of water. There is a built-in safety feature. The mineral and chemical filters become clogged long before the limit is reached and the straw stops drawing water.
Jackie: I think I’ll go to get one for my camping trip this weekend. It will surely be carrying a lot of water or having to boil it at the campsite.
选项
A、They become clogged before losing effectiveness.
B、They’re equipped with built-in measuring devices.
C、Their safety, limits are clearly marked.
D、They change color when no longer effective.
答案
A
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3873452.html
相关试题推荐
[originaltext]Gu:Goodmorning.I’mDr.GufromtheSeismologyBureauofChina
[originaltext]Gu:Goodmorning.I’mDr.GufromtheSeismologyBureauofChina
[originaltext]Gu:Goodmorning.I’mDr.GufromtheSeismologyBureauofChina
WhatdoesMr.Stevensonthinkofhisprofession?[br][originaltext]W:Goodmor
WhatdoesMr.Stevensonthinkofhisprofession?[br][originaltext]W:Goodmor
WhatdoesMr.Stevensonthinkofhisprofession?[br][originaltext]W:Goodmor
WhatdoesMr.Stevensonthinkofhisprofession?[br][originaltext]W:Goodmor
WhatistheParisforumexpectedtoachieve?[originaltext]Theso-calledMaj
[originaltext]M:I’mAviArdittiandthisweekonWordmaster:survivingajobi
[originaltext]M:I’mAviArdittiandthisweekonWordmaster:survivingajobi
随机试题
Drunkendrivinghasbecomeanational【C1】______.Everyhourofeveryday
A.shortenedB.expressionC.originsD.breaksE.statementF.directio
Mostpublishingisnow"electronic"inthesensethatbooks,magazines,and
WilliamFaulknerwasborninOxford,Miss.Hehad【1】education,thenhejoine
Howmenfirstlearnedtoinventwordsisunknown;【B1】,theoriginoflangu
Whatistheeventualeffectofthebehaviorofthebank?[br][originaltext]
[img]2016m3x/ct_eyyjscz2015c_eyyjscd_0021_20163[/img]Atmoviepreview,repo
已知P(A)=P(B)=P(C)=1/4,P(AB)=P(BC)=0,P(AC)
十字路口的交通信号灯每分钟红灯亮30秒、绿灯亮25秒,黄灯亮5秒。当你抬头看信号
下列风险控制方法中,适用于第二类风险源控制的是( )。A.个体防护 B.隔离
最新回复
(
0
)