题目内容

Exposure to asbestos fibres is harmful to people' s health ______.

A. so the use of asbestos is limited
B. but asbestos will continue to be used for a long time to come
C. so other new kinds of materials are under development
D. but they will not be so when ventilation devices are used

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A) rings B) cycles C) circles D) rounds

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C. circles
D. rounds

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A. mode
B. way
C. form
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A) times above B) time C) times in D) times

A. times above
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A. "ups" and "down"
B. "goods" and "bads"
C. "pros" and "cons"
D. "highs" and "lows"

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