have found thousands of uses of this fireproof material, of the so-called “cloth of stone”.
52. Which title best expresses the main idea of this passage? A. Asbestos mined in Canada C. A “wonder” mineral
B. Fireproof matter D. A new roofing material
53. Johns proved his ability as a salesman by_______.
A. going into roofing business B. carrying asbestos from Italy C. sending a trained scientist
D. showing the use of asbestos gloves
54. Which is the most important character of asbestos that the author wants to show us?
A. It is like thread. C. It burns easily.
B. It feels soapy.
D. It is unusually heavy.
55. The author’s main purpose in writing this passage was to _______.
A. show the need for more scientists B. compare asbestos with other minerals C. increase the sales of asbestos D. present facts about asbestos 【参考答案】52—55、CDAD
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