问题
单项选择题
父亲和儿子的年龄和为50岁，三年前父亲的年龄是儿子的三倍，多少年后儿子年满18岁（）
A．2
B．4
C．6
D．8
答案
参考答案：B
解析：
假设父亲和儿子年龄各为X，Y则X+Y=50;
解得Y＝14， 18-14=4。
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父亲和儿子的年龄和为50岁，三年前父亲的年龄是儿子的三倍，多少年后儿子年满18岁（）
A．2
B．4
C．6
D．8
参考答案：B
解析：
假设父亲和儿子年龄各为X，Y则X+Y=50; 解得Y＝14， 18-14=4。
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| It was Thanksgiving morning and in the crowded kitchen of my small home I was busy preparing the traditional Thanksgiving turkey when the doorbell rang. I 1 the front door and saw two small children in 2 huddling(挤作一团)together on the top step. "Any old 3 , lady ?"asked one of them. I was busy. I wanted to say "no" until I looked down at their feet. They were 4 thin little sandals(凉鞋), wet with heavy snow. "Come in and I'll make you a cup of hot 5 ". They walked over and sat down at the table. Their 6 sandals left marks upon the floor I served them coffee and bread with jam to fight against the cold 7 . Then I went back to the 8 and started again on my household budget. The silence in the front room 9 me, so I looked in. The girl held the 10 cup in her hands, looking at it. The boy asked in a flat 11 ,"Lady, are you rich?" "Am I rich? Mercy, no!"I looked at my shabby slipcovers(破旧的沙发套). The girl 12 her cup back in saucer(茶托)carefully and said, "Your 13 match you saucers. "Her voice was hungry with a need that large amount of food could supply. They left after that, 14 their bundles of papers against the wind. They hadn't said "Thank you". They didn't 15 to. They had reminded me that I had so much for which to be 16 . Plain blue china cups and saucers were 17 worth five pence. But they matched. I moved the chairs back from the fire and cleaned the living room. The muddy 18 of small sandals were 19 wet upon my floor. "Let them be for a while, "I thought. Just 20 I should begin to forget how rich I am. | ||||
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