专家表示：人为型空气污染（工业排放和尾气排放等）是雾霾天气的重要成因，对此，需要抓住关键和薄弱环节，采取综合治理手段，实现多项污染物协同减排；同时呼吁市民树立环保观念，减少私车出行，倡导每人少开一天车，大家共同努力，共建绿色家园。以上材料体现的唯物辩证法的道理有（）
①运用系统优化的方法，各方面协同减排
②树立正确的价值观，共创绿色家园
③量变是质变的必要准备，践行环保需要从一点一滴做起
④主要矛盾决定事物的性质，抓住环境治理的关键环节
A.①③
B.①④
C.②③
D.②④
参考答案：A
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| One Hour of Time A man came home from work late again, tired and annoyed, to find his 5-year-old son waiting for him at the door. "Daddy, may I ask you a 1 ?" "Yeah, sure, what is it?" replied the man. "Daddy, how much money do you _ 2 an hour? " "That's none of your business. What makes you ask such a thing?" the man said 3 . "I just want to know. Please tell me: how much do you make an hour?" insisted the little boy. "If you 4 know, I make $20 an hour. " "Oh," the little boy replied, head bowed. Looking up, he said, " Daddy, may I 5 $10 please? " The father was angry. "If the 6 reason you wanted to know how much money I make is just that you can borrow some to buy a 7 toy or some other nonsense, then you march yourself 8 to your room and go to bed. " The little boy quietly went into his room and 9 the door. The man sat down and started to get even madder about the little boy's 10 . After an hour or so, the man had 11 . The man went to the door of the little boy's room and opened the door. "Are you 12 son?" he asked. "No, Daddy, I'm awake," replied the boy. "I've been thinking, maybe I was too 13 on you earlier," said the man. "Here's that $10 you 14 ." The little boy sat straight up, 15 . "Oh, thank you Daddy! " he yelled. Then, reaching under his pillow, he pulled out some 16 bills. The little boy slowly 17 out his money, and then looked up at the man. "Why did you want more money if you 18 had some?" the father asked angrily. "Because I didn't have 19 , but now I do,"the little boy replied. "Daddy, I have $ 20 now. Can I buy an hour of your 20 ?" | ||||
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