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问题 解答题

一个圆柱体木块的高是8厘米，沿直径竖直从中间切开，表面积增加了96平方厘米，这个圆柱体的表面积是多少平方厘米？

答案

圆柱的直径：96÷2÷8，

=48÷8，

=6（厘米）；

圆柱表面积：3.14×（6÷2）2×2+3.14×6×8，

=3.14×18+3.14×48，

=3.14×64，

=200.96（平方厘米）；

答：这个圆柱体的表面积是200.96平方厘米．

单项选择题

《客车运用限度表》中规定，踏面擦伤及局部凹入深度本属出库≤（）mm。

A.0.5

B.1

C.1.5

D.2
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填空题

When I was growing up, I was embarrassed to be seen with my father. He (1) severely crippled and very short, and when we would walk together, his hand on my arm (2) balance, people would stare. I would inwardly be afraid (3) squirm at the unwanted attention. If he ever noticed or was bothered, he never let (4) .
It was difficult to coordinate (5) steps - his halting, mine impatient - and because of that, we didn’t say much as we went along. But as we started out, he always said, "You (6) the pace. I will try to adjust to you. "
Our usual walk was to or (7) the subway, which was how he got to (8) . He went to work sick, and (9) nasty weather. He almost never missed a day, and would (10) it to the office even if (11) could not: a matter of pride!
He never talked about himself as an object of pity, (12) did he show any envy of the more fortunate or able. What he looked for in others was a "good heart", and if he found one, the owner was good enough for him.
Now that I am older, I believe that is a proper standard (13) which to judge people, even though I still don’t know precisely (14) a "good heart" is. But I know the times I don’t have one myself.
He has (15) gone many years now, but I think (16) him often. I wonder if he sensed my reluctance to be seen with him during our (17) . If he did, I am (18) I never told him how sorry I was, how unworthy I was, how I regretted it. I think of him when I complain about trifles, when I am (19) of another’s good fortune, when I don’t have a "good heart".
At such times I put my hand on his arm to regain my (20) , and say, "You set the pace, I will try to adjust to you.\
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