To increase the supply of negative ions indoors, some scientists recommend the use ofionisers: small portable machines, which generate negative ions. They claim that ionisers notonly clean and refresh the air but also improve the health of people sensitive to excess positive ions. Of course, there are the detractors, other scientists, who dismiss such claims andare skeptical about negative/positive ion research. Therefore people can only make up theirown minds by observing the effects on themselves, or on others, of a negative rich or poorenvironment. After all it is debatable whether depending on seismic readings to anticipate earthquakes is more effective than watching the cat.
1. What effect does exceeding positive ionization have on some people?
A. They think they are insane.
B. They feel rather bad-tempered and short-fussed.
C. They become violently sick.
D. They are too tired to do anything.
2. In accordance with the passage, static electricity can be caused by___.
A. using home-made electrical goods.
B. wearing clothes made of natural materials.
C. walking on artificial floor coverings.
D. copying TV programs on a computer.
3. A high negative ion count is likely to be found___.
A. near a pound with a water pump.
【第1822期阅读理解附答案】相关文章:
最新
2016-10-18
2016-10-11
2016-10-11
2016-10-08
2016-09-30
2016-09-30