题目

（2010·江苏三所四星级学校高三水平测试）   27. The Indian Ocean tsunami at the end of 2004 is believed ____ more than 160,000 people and made millions homeless, _______ it perhaps the most destroying tsunami in history. A. to kill; making     B. to have killed; making   C. having killed; to make  D. killing; made 答案：C在托里拆利实验中，当玻璃管竖直放置时，管内外水银面的高度差为76 cm。下列各种情况，能使管内外水银面的高度差发生变化的是( )A. 向水银槽内倒一些水银，使槽内水银面升高2 cmB. 把玻璃管向槽内再深入1 cmC. 把玻璃管向上稍微提起一些(管口不离水银面)D. 天气骤变，大气压发生变化