问题
单项选择题
钢柱基础坑挖好后，在灌注之前每边应加（）
A、5~30mm
B、5~20mm
C、10~30mm
D、10~20mm
答案
参考答案：C
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钢柱基础坑挖好后，在灌注之前每边应加（）
A、5~30mm
B、5~20mm
C、10~30mm
D、10~20mm
参考答案：C
完形填空（共20小题；每小题1分，满分20分） 阅读下面的短文，掌握其大意，然后从36～55各题所给的四个选项（A、B、C、D）中，选出能填入相应空白处的最佳选项。 This was an unforgettable and wonderful experience．It happened about three years ago and it has had a 21 effect on me．I would like to show respect here for the two men I do not know 22 but whose actions gave a new 23 to the words — kind and generous. I was walking down a busy street on a cold, windy day in early 24 , A homeless man, probably about 60 and without wearing any shoes , was 25 for change on a street corner. A BMW car 26 on the other side of the street and an executive（主管）who was perfectly dressed stepped out of the car．He was probably about 27 years old．He was wearing a blue business suit with a deep red silk tie．He walked 28 across the street and over to the homeless man．Without saying anything, he first gave him a lot of 29 and then he sat down and took off his leather gloves（ 手套）, beautiful black leather shoes and his black dress socks．Then he 30 them to the homeless man．The homeless man took them and stared with a/an 31 mouth. As he drove off, I couldn’t 32 thinking that it was probably the first time he had 33 the pedal（ 踏板）of that top-brand BMW car with a 34 foot! I stood there and the looks of 35 appeared on my face and the homeless man’s. Two men of about the same age 36 very different lives had met and the one who was 37 in materials had offer  ed 38 than his shoes．He had left this BMW car and 39 down from his high position．He lifted up the other man when he offered respect, 40 and real generosity.
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