2012年12月19日全国生猪平均价格15.72元/公斤。据某市物价局专业人士预测，该市生猪收购价仍将有1元/500克的上涨空间。这可能带来的影响有
A．人们对猪肉的需求量会急剧减少
B．生猪的养殖成本提高，养殖规模缩小
C．人们对牛肉的需求量会有所减少
D．以羊肉为原料的食品价格下降的空间变小
答案：D
题目分析：价格变动影响需求，一般说价格上涨，需求减少。生猪收购价上涨，会引起猪肉需求量减少，但不是急剧减少。生猪收购价上涨，会刺激生猪的养殖规模扩大。在互为替代的两种商品中，一种商品价格上升，消费者将减少对该商品的需求，导致对另一种商品需求量增加。牛肉好猪肉是互为替代品，人们对牛肉的需求量会有所增加。故ABC项错误。本题选D项。
点评：价格变动对需求量的影响，包括对该商品需求总量的影响，对相关商品需求量的影响，即对互补商品和替代品需求量的影响。分清是对什么的影响是作对本题的关键。本题难度适中。
| 用方框中所给单词的适当形式填空，使短文完整正确。（每个单词限用一次） | |
had no 1 at all. So the father decided to call on a monk(修道士）to train 2 child. The monk said to the boy's father, "You should leave your son alone here. rii make him into a 3______________man within three months. However, you can't come to see him during this period.” Three months 4 the boy's father came. The monk arranged a boxing match 5 the child and an experienced boxer. Each time the fighter struck the boy, he fell down, but at once the boy6___________up, and each time he was knocked down again, then the boy stood up again. After several times, the monk asked, "What do you think of your child?" “7____________ashame（羞愧）!”the boy's father said.”I never thought he would be so easily knocked down.I needn't have him 8 here any longer.” “I am sorry 9 that's all you see. Don't you see that each time he fell down, he stood up again instead of 10____?That's the kind of courage you wanted him to have.” |