题目

 When she is put in a situation ______ she has to make a remark on others, she usually changes the topic.        A. that                   B. when         C. which D. where 答案：D下列变化属于化学变化的是A. 汽油挥发 B. 瓷碗破碎 C. 酒精燃烧 D. 冰川融化