Howwillourcontinuouslygrowingpopulationaffectourwayofl...
问题详情:
How will our continuously growing population affect our way of life, our environment, even our planet? No matter how you look at it, we will face 41_extremely serious problem. By the middle of the 21st century, we 42_(use) up all the oil that drives our cars if at the rate we’re going. Even if scientists develop some new 43_(way)of feeding the human race, the crowded conditions on the earth will make 44_necessary for us to look for open space somewhere else. But none of the planets in our solar system are able 45_(support) life at present. One possible solution 46_the problem, however, has recently been suggested by an American scientist, Professor Carl Sagan. His idea is 47_before the earth’s resources are almost exhausted, it will be 48_(total)possible to change the atmosphere of Venus(金星)and so create a new world almost as large as earth itself.
However, 49_his idea is turned into reality, humans have a long way to go. On the one hand, Venus is much 50_(hot)than the earth; on the other hand, there is only a tiny amount of water there.
【回答】
41.an 42.will have used 43.ways 44.It 45.to support
46.to 47.that 48.totally 49.before 50.hotter
知识点:语法填空
题型:未分类
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已知铁的一种氧化物,其中含氧元素的质量分数为30%,则这种铁的氧化物的化学式为 ( ) A.FeO ...
问题详情:已知铁的一种氧化物,其中含氧元素的质量分数为30%,则这种铁的氧化物的化学式为()A.FeO B.Fe2O3C.Fe3O4 D.无法判断【回答】B知识点:金属的化学*质题型:选择题...
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如图,形状相同、大小相等的两个小木块放在一起,其俯视图如图所示,则其主视图是( ).
问题详情:如图,形状相同、大小相等的两个小木块放在一起,其俯视图如图所示,则其主视图是( ).【回答】D知识点:三视图题型:选择题...
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简答题(选做一题)(5分)20.阅读下面《红楼梦》选段,依据原著故事情节,回答问题。一句话未了,忽见一个老婆子...
问题详情:简答题(选做一题)(5分)20.阅读下面《红楼梦》选段,依据原著故事情节,回答问题。一句话未了,忽见一个老婆子忙忙走来,说道:“这是那里说起!金钏儿姑娘好好的投井死了!”金钏儿因何投井自尽?她死后,王夫人和宝钗对此作何反应?请简述。21.阅读下面《欧也妮·葛朗台》选段,...
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如图中,A、B、C、D、E是单质,G、H、I、F是B、C、D、E分别和A形成的二元化合物,已知:①反应C+G ...
问题详情:如图中,A、B、C、D、E是单质,G、H、I、F是B、C、D、E分别和A形成的二元化合物,已知:①反应C+G B+H能放出大量的热,G是红综*固体粉末;②I是一种常见的温室气体,它和E可以发生反应:2E+I2F+D,F中的E元素的质量分数为60%.回答问题: ⑴①中反应的化学方程式为 ...
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