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Questions 11-14 Complete the notes below. Choose one suitable word from the Reading Passage above for each answer. Write your answers in boxes 11-14 on your answer sheet. Traditional refrigerators use 11___________ pumps to drop temperature. At present, scientists are searching for other methods to produce refrigeration, especially in computer microprocessors 12___________ materials have been tried to generate temperature drops five times bigger than any previously recorded 13___________ effect has also been adopted by many researchers to cool hotspots in computers. A miniature version of a car 14___________ may also be a system to realize ideal computer cooling in the future.
11.___________
13.___________
14.___________
12.___________