首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
This conversation is mainly about ______
This conversation is mainly about ______
admin
2009-01-05
39
问题
This conversation is mainly about ______
W: I haven’ t seen you for a while. Have you been away?.
M: Yes, I just got back from vacation. I took a tour around the Great Lakes. Have you ever been there?
W: Oh yes! When I was young, I lived in Erie County, New York, and I used to go swimming in Lake Erie all the time. We also went to Lake Ontario in Canada.
M: But I thought that Lake Erie was so polluted that almost everything living in it had died.
W: At one time Lake Erie was almost dead. There was so many algae that the oxygen supply was practically used up.
M: It was the amount of phosphates and detergents that caused this excessive growth of algae, wasn’t it?
W: Yes, but since both the United States and Canada have now limited phosphates and detergents, there has been tremendous gain in the fight against water pollution. In fact, an the Great Lakes will be ninety percent improved within the next generation.
M: I’ m glad to hear an environmental success story at last.
选项
A、Too many algae
B、Excessive recreational use
C、Lack of adequate rainfall
D、Too much evaporation
答案
A
解析
转载请注明原文地址:https://jikaoti.com/ti/b7XMFFFM
0
专业英语四级
相关试题推荐
Theabilitytocommunicateistheprimaryfactorthatdistinguisheshumanbeingsfromanimals.Anditistheabilitytocommunic
Theabilitytocommunicateistheprimaryfactorthatdistinguisheshumanbeingsfromanimals.Anditistheabilitytocommunic
WastheRedPlanetonceawetplanet?ApluckyMartianroverfinallydeliverssomehardevidence.GiovanniSchiaparellicould
PASSAGETHREEWhat’sthispassagemainlyabout?
PASSAGETHREEWhatisthepassagemainlyabout?
Unlikeanyothercreatureonthisplanet,humanscanlearnandunderstand,withouthavingexperienced.Theycanthinkthemselve
Unlikeanyothercreatureonthisplanet,humanscanlearnandunderstand,withouthavingexperienced.Theycanthinkthemselve
Wouldyoubeshockedtofindoutanaverageof18peopledieeverydayduetotheshortageofavailableorgandonors?Duetothe
随机试题
如图所示,等截面烟囱受自重和风荷载作用。已知烟囱高h=40m,砌体材料重度γ=15kN/m3,侧向风压q=1.5kN/m,底面外径D=3m,内径d=1.6m,则该烟囱的最大正应力为()。
荧光原位杂交直接法的特点应是
发生切口疝最主要的病因是
胃炎之肝胃积热证宜选用方胃炎之肝气犯胃证宜选用方
首次公开发行股票采用询价方式的,公开发行股票后总股本超过4亿股的,网下初始发行比例不低于本次公开发行股票数量的()。
下列不属于着装“TPO”原则的是()。
全国人民代表大会常务委员会的组成人员,由全国人民代表大会从()中选举产生。
两份同样的细菌培养液中加入同一种细菌,一份培养液放在光照下,一份培养液放在黑暗中。一周后,光照下的培养液中的细菌都死了,黑暗下的培养液中的细菌繁殖了很多倍。因此,黑暗有利于此种细菌的生长和繁殖。以下各项如果都为真,最能削弱上述推论的是()。
对于出生国籍,我国采用()。
Bigcitestodayareconfrontedwithveryseriousproblems.Transportisa【C1】______difficulty:someplannersbelievein【C2】_____
最新回复
(
0
)