分析 本文讲述的是美国芝加哥的一项健康调查发现抽烟的人的皮肤容易起皱纹,目的在于呼吁人们不要抽烟.
解答 72.A 主旨大意题.根据文章第一段Smoking not only can wrinkle(起皱纹) the face and turn it yellow--it can do the same to the whole body,researchers reported on Monday.可知抽烟可以让给人全身的皮肤起皱纹并且变黄.故A选项有弹性不包括在内,故选A.
73.B 推断题.根据文章第二段and found that the total number of packs of cigarettes smoked per day and the total years a person has smoked were linked with the amount of skin damage a person experienced,可知皮肤状况与烟龄和吸烟多少有关,只有B选项未提及,故选B.
74.A 细节题.根据文章倒数第二段The report did not discuss the mechanism involved but previous research has found that cigarette smoke,among other things,causes blood vessels(血管)beneath the skin to constrict(紧缩),reducing blood supply to the skin.吸烟引起血管紧缩,导致向皮肤供血减少,可知A项解释正确.故选A.
75.C 推理题.在本文指作者主要讲述了抽烟对人们健康,尤其是皮肤的影响.目的在于呼吁人们不要抽烟.故C正确.
点评 科教类阅读难度比一般阅读较大,它存在的生词比较多,因此考生应当综合略读、跳读和查读,猜词等阅读技巧来做题,平时也应加强练习.
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