问题
单项选择题
下 * * 种元素，按照金属的活动性由强到弱的顺序，排列正确的是（）？
A.Fe、Zn、Cu
B.Cu、Fe、Zn
C.Fe、Cu、Zn
D.Zn、Fe、Cu
答案
参考答案：D
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下 * * 种元素，按照金属的活动性由强到弱的顺序，排列正确的是（）？
A.Fe、Zn、Cu
B.Cu、Fe、Zn
C.Fe、Cu、Zn
D.Zn、Fe、Cu
参考答案：D
One day，a man in rags begged from door to door along the street. With an old wallet in his hanD. he was asking for a few coins to buy something to eat. He kept complaining（抱怨） about his bad fortune and kept 36 why those who had so much money were never 37 and were always desiring more. "As far as I'm concerneD. if I had only enough to 38 and to wear, I would not want anything more.” Just at that moment Goddess Fortune, who came down the 39 ，saw the beggar and said to him, "Hi, I have wished to 40 you for a long time. Now, open your 41 and I will pour my gold into it. But I will do that only on this 42 ：All that falls into the wallet will be pure gold; but every piece falling upon the 43 shall become dust. Do you unde stand?""I see.”said the beggar."Then you should 44 ！It's obvious that your wallet is a(n) 45 one，so don't to it too heavily,”said the Goddess Fortune. The excited beggar could hardly 46 to have gold He quickly opened his wallet, anc 47 of yellow coins was poured into it. The wallet grew heavier and heavier. "Is that enough? Isn't it cracking?" asked Fortune. "Never 48 ．It's still strong enough now.，’answered the beggar. The wallet was filled with so many coins that the beggar's hands began to 49 . "A if only the golden stream would 50 forever! Just a little more，”said the beggar,“ 51 just a handful or two.” "There! It's full. The wallet will 52 ．”warned the Goddess, but the beggar reque teD.“It will 53 a little more, just a little more.” One more piece was added and the wallet split. The 54 fell upon the ground and came dust, The greedy beggar had nowto 55 but his broken bag.
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