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问题 单项选择题

Changes often happen in（74）．

A．Initiating Process

B．Executing Process

C．Planning Process

D．Closing Process

答案

参考答案：B

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金属、陶瓷、塑料等许多材料，在工业生产中应用非常广泛．随着科学技术的发展，科学家通过对这些传统材料进行改造，又获得许多具有特殊功能的材料，我们把它们称为新材料．用隐形材料制成的“隐形飞机”，可以有效避开雷达的探测，其秘密之一在于它的表面有一层特殊涂层，能够将雷达发射的电磁波大量______（选填“吸收”或“反射”），使______（选填“吸收”或“反射”）的电磁波大大减少；秘密之二在于它的表面制成特殊形状，这种形状能够______（选填“增强”或“减弱”）电磁波反射回雷达设备．
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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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