题干

目前,全国661个城市中,已有近80个城市在部分居民中实行了阶梯水价。今后,国家在调整水价、电价、气价时,将逐步推广阶梯式定价的办法,对满足群众基本需要的部分实行优惠价格,而对超出基本需要部分实行较高的价格。用量越多,价格越高。国家对水、电、气实行阶梯价格的主要目的是 
①体现资源的价值,反映资源的紧缺程度 
②发挥价格杠杆的作用,促进节约,增强居民的节约意识 
③增加财政收入   
④体现社会公平

A:①②③

B:②③④

C:①②④

D:①③④

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答案(点此获取答案解析)

C

同类题4

    "Can I see my baby?" the happy new mother asked. When the baby was lying in her arms and she moved the cloth to look upon his tiny face, she gasped(吃力地喘着气). The doctor turned quickly and looked out of the hospital window. The baby had been born without ears. Luckily, time proved that the baby's hearing was perfect. Though the misfortune(不幸)happened to him, he grew into a handsome boy. Yet he felt ashamed when he communicated with others.
    "You should get in touch with other young people," his mother told him, with a kindness in her heart. The boy's father talked with the family doctor about his ears. "Could nothing be done?"the father asked. "I believe I could give him a pair of outer ears, if they could be got," the doctor replied.
    Two years went by. One day, his father said to the son, "You are going to the hospital, Son. Mother and I have someone who will donate the ears you need, but it's a secret."The operation is a big success. Later he married and entered the diplomatic(外交的) service. One day, he asked his father, "Who gave the ears? Who gave me so much? I could never do enough for him or her."
    "You could, my son," said the father, "but the agreement was that you are not to know…not yet."
    The years kept their secret, but one of the darkest days did come. He stood with his father over his mother's casket(棺材). Slowly, the father stretched forth(伸出) a hand and raised the thick, reddish brown hair to reveal the mother had no outer ears.
    "Mother said she was glad she never let her hair be cut," his father whispered gently, "and nobody ever thought mother less beautiful, did they?"