首页
登录
职称英语
[originaltext] If the population of the Earth goes on increasing at its pres
[originaltext] If the population of the Earth goes on increasing at its pres
游客
2023-09-10
12
管理
问题
If the population of the Earth goes on increasing at its present rate, there will eventually not be enough resources left to sustain life on the planet. By the middle of the 21st century, if present trends continue, we will have used up all the oil that drives our cars, for example. Even if scientists develop new ways of feeding the human race, the crowded conditions on Earth will make it necessary for us to look for open space somewhere else.
An American scientist, Professor Carl Sagan, believes that before the earth’s resources are completely exhausted, it will be possible to change the atmosphere of Venus and so create a new world almost as large as Earth itself. The difficulty is that Venus is much hotter than the Earth and there is only a tiny amount of water there.
Sagan proposes that algae, an organism that can live in extremely hot or cold atmospheres and at the same time produce oxygen, should be bred in conditions similar to those on Venus. As soon as this has been done, the algae will be placed in small rockets. Spaceships will than fly to Venus and fire the rockets into the atmosphere. In a fairly short time, the algae will break down the carbon dioxide into oxygen and carbon.
When the algae have done their work, the atmosphere will become cooler but before man can set foot on Venus, it will be necessary for the oxygen to produce rain. The surface of the planet will still be too hot for men to land on it but the rain will eventually fall and in a few years something like Earth will be reproduced on Venus.
选项
A、We will not have enough food to eat.
B、All the oil that drives our cars will be used up.
C、The earth will become too crowded.
D、There will be little water left on Earth.
答案
D
解析
该题问“下列那句文中没有提到?”文中提到“If the population of the Earth goes on increasing at its present rate, there will eventually not be enough resources left to sustain life on the planet. By the middle of the 21st century, if present trends continue, we will have used up all the oil that drives our cars, for example.”根据原文的信息,我们可以判断,排除A项,D项,C项因此,D项“地球上将不剩多少水”正是没提到的。
转载请注明原文地址:https://tihaiku.com/zcyy/3002633.html
相关试题推荐
[originaltext]ThecolorfulInternetdrawsustocomputersandbringsusjoy
[originaltext]ThecolorfulInternetdrawsustocomputersandbringsusjoy
[originaltext]W:Hello,John,youmustbepleased.Afterall,howmanystudents
[originaltext]M:DoyouthinkthetravelagencywillbeopenonSaturdayaftern
[originaltext]M:DoyouthinkthetravelagencywillbeopenonSaturdayaftern
[originaltext]M:DoyouthinkthetravelagencywillbeopenonSaturdayaftern
[originaltext]M:DoyouthinkthetravelagencywillbeopenonSaturdayaftern
[originaltext]OneofNewYork’smostbeautifulandvaluablebuildingsisin
[originaltext]OneofNewYork’smostbeautifulandvaluablebuildingsisin
[originaltext]Themodernsailingshipwasdevelopedbyamanwhoneverwent
随机试题
[originaltext]Aspopulationscontinuetoage,moreandmorepeoplearegoin
TheBeautyAdvantage[A]Mostofushaveheardthestory
[originaltext]M:[9]TheRepublicanPartyinAmericaisopposingstemcellresear
[originaltext]Today,I’dliketoprefacemyremarksfromastoryfrommyown
用两箱法进行温度变化试验时,如由于样品尺寸大,不能在3min内完成转换,那么只要
198、对于操作箱中的出.口继电器,还应进行动作电压范围的检验,其值应在()
下列关于洁净厂房内照明设施设置的说法中,错误的是()。A.洁净厂房内应设置供人
某年5月,张某通过期货从业人员资格考试并取得期货从业人员资格考试合格证明。第二年
关于单位工程投入使用验收,以下说法正确的是()。A.在竣工验收前已经建成并能发挥
9个月男婴,高热、呕吐3日,抽搐2次,查体:嗜睡,前囟膨隆,颈强(+),腰穿脑脊
最新回复
(
0
)