题干

如图1所示的甲、乙、丙三个渗透装置中,三个漏斗颈的内径相等,漏斗内盛有浓度相同的蔗糖浓液,且漏斗内液面高度相同,漏斗口均封以半透膜,置于同一个水槽的清水中。三个渗透装置的半透膜的面积和所盛蔗糖溶液的体积不同,如下表所示。

装置编号



半透膜面积
S
S/2
S
蔗糖溶液体积
T
T
2T
图2中曲线1、2、3表示漏斗液面高度随时间的变化情况。则曲线1、2、3与甲、乙、丙三个装置的对应关系是     (  )

A:1-丙;2-甲;3-乙

B:1-乙;2-甲;3-丙

C:1-甲;2-乙;3-丙

D:1-丙;2-乙;3-甲

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答案(点此获取答案解析)

A

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阅读理解

    People are compassionate. With effort, we can translate compassion into action. An experience last weekend showed me this is true. I work part-time in a supermarket across from a building for the elderly. These old people are our main customers, and it's not hard to lose patience over their slowness. But last Sunday, one aged gentleman appeared to teach me a valuable lesson. This untidy man walked up to my register (收款机) with a box of biscuits. He said he was out of cash, had just moved into his room, and had nothing in his cupboards. He asked if we could let him have the food on trust. He promised to repay me the next day.

    I couldn't help staring at him. I wondered what kind of person he had been ten or twenty years before, and what he would be like if luck had gone his way. I had a hurt in my heart for this kind of human soul, all alone in the world. I told him that I was sorry, but store rules didn't allow me to do so. I felt stupid and unkind saying this, but I valued my job.

    Just then, another man, standing behind the first, spoke up. If anything, he looked more pitiable. “Charge it to me,” was all he said.

    What I had been feeling was pity. Pity is soft and safe and easy. Compassion, on the other hand, is caring in action. I thanked the second man but told him that was not allowed either. Then I reached into my pocket and paid for the biscuits myself. I reached into my pocket because these two men had reached into my heart and taught me compassion.