受灾害天气的影响，面粉加工企业普遍预期小麦价格将上涨，纷纷入市抢购新小麦，小麦收购价一度大涨。为稳定粮价，2011年7月23日，中国储备粮管理总公司向市场投放500万吨小麦。这说明
①供求变化直接影响商品的价格 ②国家恰当的调控有利于经济稳定
③价格变动对生产具有调节作用 ④价格涨跌是通过行政手段实现的
A．①②
B．①④
C．②③
D．③④
答案：A
本小题考查的是供求。中国储备粮管理总公司向市场投放500万吨小麦，这说明供求变化直接影响商品的价格，国家恰当的调控有利于经济稳定，①②符合题意。
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| Jane raced onto the train platform and asked a porter, "Is this the train to Rochester?" "Yes," said the porter, "but only the …Hey! Wait." He was too 1 . Jane had raced off 2 he had finished speaking. She had just 3 herself in a seat when the train 4 out of the station. Jane got out her book and settled down to read. After about an hour or so, she looked 5 and glanced out of the window. "That's 6 ." she thought."the landscape (景色) doesn't look 7 , and it should; I've 8 this route so many times." She was getting 9 when the big, red-faced conductor walked up and asked for her 10 . One glance was enough. He 11 his head in friendly reproach(责备) and said,"Now, young lady, what did you do a fool thing like that for? This is the 12 ticket. You 13 have sat at the back of the train. The Rochester-bound (开往) section was 14 at the last station. Jane's face grew red. "I'm sorry," she said, "I guess I was in too much of a 15 to find out…" "Well," said the conductor,"don't 16 . You shouldn't have been in such a hurry, but I dare say we can 17 you a train going in the right 18 at Syracuse. You'll be a couple of hours late 19 , though." When Jane finally stepped onto the Rochester platform, her mother 20 up to her. "Oh, Jane, we have been so worried. What on earth happened?" "Well, Mom," said Jane,"it's a long story......." | ||||
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