Pollution by Electromagnetic Radiation
① Electromagnetic waves are a kind of energy that fluctuates from periodic changes in electric and magnetic fields and spreads through space, also known as electromagnetic radiation. It can both benefit mankind, but at the same time also bring negative effects on the environment. Negative effects beyond the standard intensity of electromagnetic radiation is electromagnetic radiation pollution, also known as electronic "smoke" or electronic waste.
② source of electromagnetic radiation pollution can be divided into natural sources of electromagnetic radiation and man-made sources of electromagnetic radiation. Natural sources of electromagnetic radiation is caused by natural phenomena in the atmosphere, such as natural discharges, lightning, volcanic eruptions and other such sources of atmospheric and air pollution, with black activity and black radiation of the solar electromagnetic field sources, as well as stellar outbursts, cosmic phenomena such as the movement of electrons between the universe of the universe of the source of the electronic field. Man-made sources of electromagnetic radiation refers to a variety of man-made systems, electrical appliances and electronic equipment produced by electromagnetic radiation, can be divided into industrial frequency radiation sources and radio frequency radiation sources. Various types of electromagnetic wave emitting systems, industrial frequency radiation systems, the use of electromagnetic energy, industrial, scientific, medical equipment, and so on, even including household appliances, are sources of electromagnetic radiation pollution.
③ electromagnetic radiation pollution is serious. It will cause unexpected major accidents, can make the electric explosion device, flammable and explosive gases such as accidental explosion, combustion, and even cause the rocket launch failure, satellite runaway. It will interfere with the signal, directly affecting the normal work of electronic, instrumentation, so that the information distortion, control failure. For example, it will cause trains, airplanes, missiles or satellites out of control. It will also jeopardize human health, long-term in the high-intensity electromagnetic radiation environment is very easy to cause leukemia, induced cancer and accelerate the proliferation of cancer cells, affecting the cardiovascular system and visual system.
④ Modern life, everywhere from the electronic equipment, we must learn from daily life to prevent electromagnetic radiation pollution. Purchase through the national electromagnetic compatibility safety certification of electronic products; try to use the landline, less use of cell phones to make phone calls; to have a display of electrical appliances installed electromagnetic radiation protection screen; active exercise, more vitamin rich in vitamin C and protein food, but also need to make regular checks to effectively prevent the impact of electromagnetic radiation pollution on human health.
(From "Environmental Protection and Life", Chongqing University Press, 2014 edition, with deletions)
14. Read through the whole text, summarize the content.
Answer Definition or concept of Electromagnetic Radiation Pollution, Sources, Hazards and ways to prevent it.
The first paragraph explains the definition of electromagnetic radiation pollution, the second paragraph, "the source of electromagnetic radiation pollution can be divided into natural sources of electromagnetic radiation and man-made sources of electromagnetic
radiation", can be seen to speak of the source of the third paragraph, "electromagnetic radiation pollution is a serious harm
15. analyze the first paragraph of the description of the method and role.
Answer The method of definition is more scientific, more essential, and more general to explain the characteristics of electromagnetic radiation pollution.
Ans. "Electromagnetic waves are a type of energy, also known as electromagnetic radiation, that fluctuates from periodic changes in electric and magnetic fields and travels through space." It is the method of definition to explain what is electromagnetic radiation. "Produces negative effects beyond the standard ` electromagnetic radiation intensity is electromagnetic radiation pollution" is also the use of definition.
16. paragraph ③ of the punctuation of the word "extremely" can be deleted, why?
Answer No. "Pole" is a word for "extreme". "Extremely" is "very" meaning, the extent of the limitations, accurately illustrate the harm of electromagnetic radiation pollution on human health, delete too absolute, "extremely" word reflects the accuracy of the language of the illustration. The word "extremely" reflects the accuracy of the language of the illustration.
An analysis of the "extreme" is the degree of the words, accurately illustrate the harm of electromagnetic radiation pollution on human health.
17. According to the meaning of the text, determine whether it is correct or incorrect.
① The source of electromagnetic radiation pollution is the natural source of electromagnetic radiation. ()
② electromagnetic radiation can be harmful to human health, long-term exposure to high-intensity electromagnetic radiation can cause leukemia, induce cancer and accelerate the proliferation of cancer cells, affecting the cardiovascular system and the visual system and so on. ()
③ Electromagnetic radiation can benefit mankind, but at the same time also bring negative impact on the environment. ()
Answer 1. wrong 2. wrong 3. right
A. This question examines the understanding of the content of the article judgment. When doing the question, return the statement to the original text and judge whether it is consistent with the original statement.
18. electromagnetic radiation pollution is so serious, boldly envision how to combat electromagnetic radiation pollution in the future?
Answer manufacture of anti-electromagnetic radiation pollution clothing; the development of new types of energy instead of electronic products and so on.
Analysis of the expansion of the extension, around the hazards of electromagnetic radiation on human health to think of ways