Toughened glass
Toughened glass is favored by architects because it is much stronger than ordinary glass, and the fragments are not as 18________ when it breaks. However, it has one disadvantage: it can shatter 19________. This fault is a result of the manufacturing process. Ordinary glass is first heated, then cooled very 20________. The outer layer 21________ before the inner layer, and the tension between the two layersThese are unstable, and can expand suddenly, particularly if the weather is 22________. If this happens, the pane of glass may break. The frequency with which such problems occur is 23________ by glass experts.
解题:根据题目中的第一句话我们能猜出toughened glass为钢化玻璃,18题中讲当钢化玻璃破碎时,它的碎片不像普通玻璃一样____?我们可以判断该空中需要一个形容词,同时根据常识我们知道钢化玻璃破碎时碎片不那么锋利,所以此题答案为F sharp;同样利用词性和常识,19题答案为I unexpectedly;20题考生若不确定答案可以利用定位信息到文章中定位答案,答案为C;21题我们又可以利用常识热胀冷缩,判断肯定外层比内层先收缩,同时考虑到词性,所以答案为K contracts;22题同样利用热胀冷缩的常识和词性,因此可以确定答案为E warm;23题根据常识无法确定答案,考生利用定位信息到文章中定位确定答案,答案为L。
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