雅思阅读实战:Time to cool it
7. FALSE
See Paragraph 3 (That may be enough to change the phenomenon from a laboratory curiosity to something with commercial applications. ) and Paragraph 4 (As to what those applications might be, Dr Mischenko is still a little hazy. He has, nevertheless, set up a company to pursue them. He foresees putting his discovery to use in more efficient domestic fridges?
8. FALSE
See Paragraph 5: Heat is released every time a logical operation is performed inside a microprocessor, so the faster the processor is, the more heat it generates. Doubling the frequency quadruples the heat output.
9. NOT GIVEN
See Paragraph 9: In the future, therefore, a combination of microchannels and either thermoelectrics or paraelectrics might cool computers.
10. D
See Paragraph 6: Tweaking the processor's heat sinks ?has reached its limit. So has tweaking the fans that circulate air over those heat sinks. And the idea of shifting from single-core processors to systems?also seems to have the end of the road in sight.
11. heat
See Paragraph 1: Today's high-tech world, however, demands high-tech refrigeration. Heat pumps are no longer up to the job. The search is on for something to replace them.
12. paraelectric
See Paragraph 3: Using commercially available paraelectric film, he and his colleagues have generated temperature drops five times bigger than any previously recorded.
13. thermoelectric
See Paragraph 7: ……the thermoelectric effect. Like paraelectric materials, this generates electricity from a heat source and produces cooling from an electrical source. Unlike paraelectrics, a significant body of researchers is already working on it.
14. radiator
See Paragraph 9: The last word in computer cooling, though, may go to a system even less techy than a heat pump——a miniature version of a car radiator.
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