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问题 填空题

等腰三角形的顶角为120°，底边上的高为3，则它的周长为______．

答案

∵等腰三角形的顶角为120°，底边上的高为3，

∴腰长=6，底边的一半=3

3
，

∴周长=6+6+2×3

3
=12+6
3
．

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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单项选择题

路面施工包括备料，路床施工，路面基层施工，路面面层施工，路窗整修等，下列是路面层的施工所包括的内容，错误的说法是( )。

A．石灰稳定土基层的施工
B．石灰工业废渣稳定土基层的施工
C．填隙碎石基层的施工
D．乳化沥青碎石混合料路面施工
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