小题1:B
小题2:A
小题3:B
小题4:D
本文主要讲述的是全球天气的变化。
小题1:由文章中“Very hot weather is common in many parts of the world.”故选B
小题2:由文章中“Health experts say that since the year 1900, very hot weather has killed more people in the United States than any other natural event.”故选A
小题3:由文章中“One year--- the unusually hot summer of 1980 heat caused about 1,700 deaths in the United States. ”
小题4:由文章中“ if possible. Wear loose and light—colored clothes. Wear a hat while in the sun. Eat fewer hot and heavy foods. And, when possible, cook foods during cooler time of the day. If possible, rest more often.”可知答案为D