NEW TPO 8 What does the passage suggest about shape-memory alloys?

该题为推理题，题干：关于形状记忆合金（shape-memory alloys），文章暗示了什么 解题思路：该题需要定位文章中与“形状记忆合金（shape-memory alloys）”有关的信息，结合选项进行判断，推断答案 首先根据关键词定位原文第二段首句：“Recently developed “smart” materials change their properties in response to external stimuli, such as temperature, light, or electrical fields. （新近开发的“智能材料”会对温度、光线或电场等外部刺激作出反应，从而改变其性质。）”随后，提到“Shape-memory alloys (SMA) can "remember" their original shape.（形状记忆合金能够“记住”其原始形状。）” 选项分析： A.They are a type of smart material.（是一种智能材料。）作者先介绍了 smart materials（智能材料），然后马上举出 shape-memory alloys（SMA） 作为例子进行说明。可以推断：形状记忆合金（shape-memory alloys）属于 smart materials（智能材料）的一种。正确。 B.They were created for use in the medical industry.（是为医疗行业开发。）原文是“Applications for this technology include orthodontic wires and stents for medical purposes and wing flaps and jet engine components in aerospace.”意思是“这种技术既用于医疗领域，也用于航空航天领域。”说明医疗只是应用领域之一，并非研发目的，排除。 C.They are easily damaged if not stored appropriately.（如果储存不当，它们很容易受损。）原文没有提及储存条件或损坏问题。属于无中生有，排除。 D.They maintain their shape even during large temperature fluctuations.（即便温度大幅波动，它们也能保持形状）原文是“After being deformed at a lower temperature, some SMAs can return to their original shape upon heating.”，即“低温下可能发生形变，加热后恢复原状”，与原文信息矛盾，排除。