战争是人类的梦魇，和平是人类的梦想。反对战争，维护和平，促进发展是全人类共同的心声。阅读材料，回答问题。

【战争缘起】

材料一：

【战争进程】

材料二：下面是有关第二次世界大战三次战役的纪录片的海报

【战争梦魇】

材料三：

【战后世界】

材料四：哈佛大学的专家史迪威大胆猜测，我们或许正生活在“自我们这个物种存在以来最和平的时期”。

材料五：二战以后，美国多次发动局部战争，特别是1999年以美国为首的北约越过联合国安理会，发动了科索沃战争。

──岳麓书社《世界历史》九年级下册》

Each of the boys ____ (carry) a bag of books at the moment.

    There are two main kinds of sports. These two kinds of sports are team sports and individual(个人的) sports. Team sports are such sports as baseball，basketball and volleyball. Team sports need two separate(独立的) teams. The teams play against each other. They compete(竞争) against each other in order to get the best score. For example, in a football game, if Team A gets 7 points and Team B gets 3 points，Team A wins the game. Team sports are sometimes called competitive(竞争性的) sports.

    Besides team sports, there is another main type of sporting activity. It's individual sports. In individual sports there are no teams. People play individual sports such as swimming, skiing and running.

    Of course, it is possible(可能) to compete in individual sports. It is possible to keep a score in individual sports. The main difference, however, between team sports and individual sports is that team sports always require(要求) more than one person.