D. have to wait for the first spin-drier for a long time 62. The underlined word “crude” in the sentence “but it was crude by today’s standards”

　　probably means __________ .

　　A. useless

　　B. ugly-looking

　　C. rough

　　D. not skillfully made 63. The article mainly tells us about __________ .

　　A. the great inventors in the world

　　B. the important inventions in the world

　　C. the short history of household machines

　　D. the importance of the machines used in the home

　　D

　　Michael Fish may soon be replaced as a weather forecaster by something truly fishier---the shark(鲨鱼).

　　Research by a British biology student suggests that sharks could be used to predict storms.

　　Lauren Smith, 24, is close to completing her study on shark’s ability to sense pressure.

　　If her studies prove the theory, scientists may be able to monitor the behaviour of sharks to predict bad weather.

　　Miss Smith had previously studied the behaviour of lemon sharks in the Bahamas.

　　She then used their close relatives, lesser spotted dogfish, for further research at Aberdeen University.

　　Her work---thought to be the first of its kind to test the pressure theory ---- resulted from the observation that juvenile blacktip sharks off Florida moved into deeper water ahead of a violent storm in 2001.

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