问题
单项选择题
铁水中锰硅比为（）时，对冶炼操作有利。
A.0.3～0.5
B.0.5～0.7
C.0.8～1.0
D.1.0～1.2
答案
参考答案：C
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铁水中锰硅比为（）时，对冶炼操作有利。
A.0.3～0.5
B.0.5～0.7
C.0.8～1.0
D.1.0～1.2
参考答案：C
One rainy night many years ago ,an elderly couple entered the hall of a small hotel in Philadephia. The couple walked to the front desk hoping to get some 21 for the night. “Could you give us a 22 here?” the husband asked. The waiter, a 23 man with a bright smile, looked at the couple and 24 that there were three meetings in town. “All of our rooms are taken,” the waiter said. “ 25 I can’t send a nice couple like you out into the rain at one o’clock in the morning. Would you be 26 to sleep in my room? It’s not 27 a suite(套房)，but it will be good enough to make you 28 for the night.” When then couple refused 39 , he explained, “Don’t worry about me.”So the couple 30 . The next morning, the elderly man said to the waiter, “you are the kind of manager who should be the boss of the best 31 in America. Maybe someday I’ll 32 one for you.” The waiter looked at them and 33 .Then they drove away. Two years passed. The waiter had almost 34 it when he received a letter from the old man. It recalled（提起）that 35 night and enclosed（附上）a round-trip to New York, asking the young man to pay them a visit. The old man 36 knowledge, the knowledge of the life, history and geography of the people whose 37 him in New York and led him to Fifth Avenue and 34th Street. He 38 to a great new building there. “That is the hotel I have just built for you,” said the elderly man. “You must be 39 ,” the young man said. “I’m not,” said the elderly man. The elderly man was William Waldor-Aster, and that 40 building was the Waldorf-Astoria Hotel. The young waiter who became its first manager was George Boldt.
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