题目

合金具有许多优良的性能。下列物质不属于合金的是（） A . 钢 B . 水银 C . 黄铜 D . 青铜 答案：B—Mr Wang was caught in a snowstorm yesterday.—I have known that，and_______his new car was completely 　destroyed.A．hopefullyB．fortunatelyC．thankfully D．unfortunately