题目

下面是4种亮度可调的台灯的电路示意图.它们所用的白炽灯泡相同，且都是“220 V 40 W”.当灯泡所消耗的功率都调至20 W时，下列哪个电路消耗的功率最小 （    ） 答案：CNot all people like to work but everyone likes to play. All over the world men and women, boys and girls enjoy _____. Since the days of long ago, adults and children have called their friends together to spend_____, even days playing games.Sports help people to live______. They help to keep people healthy and feeling good. When they are playing games, people _______ a lot. This is good for their health. Having ______ with their friends makes them happy.Many people enjoy sports by watching others _______. In small towns, crowds meet to watch the bicycle races or the soccer games. In big cities, thousands _______ to see an ice-skating or a baseball game.What are your favorite sports? Is the weather _______where you live? Then swimming is probably one of your sports. Boys and girls in China love to _______. There are wonderful beaches and there are beautiful ______ and lakes across the country. The weather is also good for swimming.1.A. music B. movies C. sports D. trips2.A. hours B. weeks C. months D. years3.A . alone B. busily C. carefully D. happily 4.A . speak B. think C. move D. eat 5.A. fun B. jokes C. dinner D. lessons6.A .walk B. play C. jump D. run7.A. buy tickets B . take turns C . read newspapers D. hold meetings 8.A . cool B. cold C. hot D. warm9.A. skate B. swim C. surf D. dance10.A. mountains B .cities C. rivers D. seas