根据倒数第二段的“On July 4th, 1934, Marie Curie died in Paris, killed by one of her own experiments. She died of radiation poisoning.(1934年7月4日,玛丽·居里在巴黎去世,死于她自己的一次实验。她死于辐射中毒)”推知,居里夫人做的一些实验对她的健康是有
根据文章的第二段的第一 句话"Her mother died when she was young, a nd when her father was caught because of tea ching Polish, which had been made illegal und er the Russian government, she had to get a job.(她的母亲在她很小的时候就去世了,在俄罗 斯政府的统治下,波兰语是非法的,而当...
will be thinner over the United States this summer.The thinner layer allows more ultraviolet rays from the sun to reach the earth.The extra amount of ultraviolet radiation could cause an increase in the number of cases of skin cancer.Ozone depletion is the result of a complex set of ...
Scientists at Tufts University and Oxford University have discovered mechanisms that may explain how head trauma leads to these diseases. Their findings suggest that concussions could activate dormant viruses present in most brains, triggering inflammation and long-term damage over months or even years. ...
When was ionizing radiation discovered? When was the cathode ray tube invented? When were televisions with cathode ray tubes taken away? When are electromagnetic waves formed? When was Michael Faraday born? How are analog signals sent? How can analog signals be converted to digital? When was the...
T he extr a amount of ultrav iolet radiation could cause an increase in the number of cases of skin cancer.Scientists first became concerned about the ozone layer in the mid-1980s when a hole was discovered in the layer above Antarctic a during the winter. T he hole was caused by ...
The thinner layer allows more ultraviolet rays from the sun to reach the earth. The extra amount of ultraviolet radiation could cause an increase in the number of cases of skin cancer. Scientists first became concerned about the ozone layer in the mid-1980s when a hole was discovered in the...
To prevent harmful habits like these from dominating a teenager's life is essential. They must learn to recognise bad habits early and make appropriate changes. 在成长过程中,青少年会变得越来越独立,并且开始自己做决定。然而,在这一时期,他们中的一部分人容易养成不良习惯。如果任其发展,在他们长大成人...
[高三英语下半年开学考试] When my dad was first diagnosed with cancer and had radiation, I pushed my folks to start eating more fresh produce and preferably organics. My mom really improved her cooking from the roasted slice of pork and frozen-veggies dinners that I had fallen in love with....
The bulk of O3 exists in the stratosphere, where it protects all terrestrial bio-systems from the Sun’s harmful UV radiation, so any thinning of that layer gives great cause for concern. O3 was not studied systematically until 1926, when one station (in Switzerland) commenced – and still ...