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问题 材料题

为下面这则短讯拟一标题，不超过15个字。

　　北京市第一家垃圾分类回收系统宣武区垃圾分类再生资源分拣站刚刚运行3个月，从垃圾中分拣出的馒头、面包、烙饼等粮食就达35吨多。如果按每人每天吃粮0.4公斤计算，相当于240人一年的口粮。而这些东西分拣出来以后，只能当作猪饲料。分拣站工作人员介绍说，最多时一天能拣出1000多公斤馒头和烙饼。

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答案

垃圾分拣三个月，拣出粮食数十吨。（概括简练，予以顺畅，符合要求意对即可）

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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多选题

在下列物体运动中，机械能守恒的是（均不计空气阻力）（　　）

A．小石块被水平抛出后在空中运动的过程

B．被匀速吊起的物体

C．光滑曲面上自由运动的物体

D．木箱沿粗糙斜面匀速下滑的过程
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