根据文中语句 Scientists have found out that the radiation (辐射) is the greatest danger to spacemen in space 可知,太阳和其它星星的辐射对宇航员有危害(harmful)。good 意为“好的”,helpful 意为“有帮助的”,useful 意为“有用的”,均不符合题意。故正确答案为D。 (3)猜测词句题。结合划线单词所在...
12.What?s“radiationeffect”accordingtothetext? A.Theterribleeffectofradiationonthepersonsandthings. B.Thegoodinfluenceofthebookishenvironmentonadolescents. C.Thebeneficialeffectofreadingbookson adolescents. D.Thebadeffectoftheenvironmentwithout booksonadolescents. 13.Howdoestheexposuretobooksimproveintellect? A...
80. 本小题为开放性问答,只需要列举一两条手机辐射的副作用,合情合理的即可给分。以下列举几条可能用上的答案: Radiation is harmful to our health./People become indifferent./ One’s eyesight may fail./ 解析看不懂?免费查看同类题视频解析查看解答 特别推荐 二维码...
D.Radiation wouldn,t be harmful if people ate some lettuce. 4. What is difficult in growing lettuce in space? A.There is no enough growing area.B.It is very hard to send up the seeds. C.A special way of watering is needed.D.It does not need soil or the fertilizer. ...
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Do Cell Phones Emit More Radiation When Charging? Generally speaking, phones have been found to emit levels of radiation that aren't likely to be harmful to human health. Several videos on social media circulating in August 2022 suggested that cell phones “become a transmitter” of radiation ...
aThis phenomenon is good or bad, but in general is not do more harm than good, cell phone convenient the life of people, and let people both in when and where have free communication, although its bring radiation is harmful to health, but relative to its advantages for, these defects is...
a. The most serious is the electric wave radiation which is thought to be harmful to users' brains. Another problem is that when people are having a meeting or having a class or at a concert etc, the ring of the cell phone may interrupt others. So I think people should use cellphones...
A team of scientists from 80 nations recently reported to the United Nations that a layer of ozone in the atmosphere,which protects humans from harmful levels of ultraviolet radiation,will be thinner over the United States this summer.The thinner layer allows more ultraviolet rays from the sun ...
(臭氧层)in the atmosphere, which protects humans from harmful levels of ultraviolet(紫外线)radiation, will be thinner over the United States this summer.The thinner layer allows more ultraviolet rays from the sun to reach Earth.The extra amount of ultraviolet radiation could cause an increase in...