题目

_____ and out of breath, we reached the top of the mountain and stopped _____ the beautiful scenery. A. Tiring; to admire     B. Being tired; admiring C. Tired; to admire      D. Tired; admiring 答案：C 解析: tired and out of breath为“形容词和介词短语”在句中作状语。stop to do sth. 停下来去做另外一件事。有银、铜、铝三根导线，下列说法中，正确的是　　　[　　] A.银导线的电阻最小　　　B.铜导线的电阻最小 C.铝导线的电阻最小　　　D.条件不足，无法比较