题目

Have you ever had to decide whether to go shopping or stay home and watch TV on a weekend? Now you  1  do both at the same time. Home shopping television networks（网络） have become a  2  for many people to shop without  3  having to leave their homes. Some shoppers are  4 of department stores and supermarkets— 5  the crowds, waiting in long lines, and sometimes   6 of finding anything they want to buy. They’d rather sit quietly at home in front of the TV set and  7  a friendly announcer describe a product   8  a model shows it. And they can   9  around the clock, bu第二次世界大战结束后，两极格局得以长期维持的决定性因素是A.第三世界力量弱小B.联合国作用软弱C.美苏力量均势D.多极化逐步发展