问题
单项选择题
基托树脂聚合过程中链增长阶段是（）
A.吸热反应
B.放热反应
C.没有热量变化
D.可能吸热可能放热
E.先放热后吸热
答案
参考答案：B
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基托树脂聚合过程中链增长阶段是（）
A.吸热反应
B.放热反应
C.没有热量变化
D.可能吸热可能放热
E.先放热后吸热
参考答案：B
I remember one Thanksgiving when our family had no money and no food, and someone came knocking on our door. A man was ___36____ there with a huge box of food, a giant turkey and even some ___37____ to cook it in. I couldn’t ___38___ it. My dad demanded, “Who are you? Where are you from?” The stranger announced, “I’m here because a friend of yours knows you’re in need and that you wouldn’t accept __39__ help, so I’ve brought this for you. Have a great Thanksgiving.” My father said, “No, no, we ___40___ accept this.” The stranger replied “You don’t have __41____.”, closed the door and left. Obviously that experience had a profound impact (深刻影响) on my life. I ___42___ myself that someday I would do well enough financially _43__ I could do the same thing for other people. By the time I was eighteen I had created my Thanksgiving ritual (习惯). I would go out ____44___ and buy enough food for one or two ___45____. Then I would dress like a delivery boy, go to the __46____ neighbourhood and just knock on a ___47____. I always __48____ a note that explained my Thanksgiving experience __49____ a kid. The note said, “All that I ask ___50___ is that you take good enough care of ___51____ so that someday you can do the same thing for someone else.” I have received more from this annual ritual than I have from any amount of __52____ I’ve ever earned. Years ago I was in New York City with my new wife during Thanksgiving. She was sad because we were not with our family. ___53____ she would be home decorating the house for Christmas, but we were __54_____ in a hotel room. When I told her what I always do on Thanksgiving, she got excited. We packed enough food for seven families for thirty days and went to buildings where half a dozen people lived in one room with no electricity and no heat in winter surrounded by rats, cockroaches(蟑螂) and the smell of urine(尿). It was both an ___55____ realization that people lived this way and a truly fulfilling experience to make even a small difference.
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