问题
单项选择题
关于胶片本底灰雾的叙述，错误的是()
A．是照射量等于零时照片所具有的密度值
B．位于特性曲线的趾部
C．是胶片曝光后产生的最小密度值
D．片基灰雾和乳剂灰雾组成
E．与乳剂感光中心的大小和数目有关
答案
参考答案：C
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关于胶片本底灰雾的叙述，错误的是()
A．是照射量等于零时照片所具有的密度值
B．位于特性曲线的趾部
C．是胶片曝光后产生的最小密度值
D．片基灰雾和乳剂灰雾组成
E．与乳剂感光中心的大小和数目有关
参考答案：C
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| I like 1 best. Last week, I saw a movie called I Robot. It tells us a story about the future with robots (机器人). It is the year of 2035 and people can see robots everywhere. Robots can help people do a lot of things, like looking 2 the old people or babies, washing, cooking, cleaning or taking dogs for a 3 . Robot does everything people ask them to do. But a policeman 4 Spooner. He doesn't like robots. Because he doesn't think that people can live well 5 robots. One day a scientist kills himself (自杀). He leaves (留下) a robot. Some time later Spooner finds 6 wrong with the robots in the world. A 7 robots have their own thoughts (思想) and want to control (控制) the people. If the robots succeed. it will be very 8 for people. Susan is another scientist working on robots. Finally, Susan and Spooner decide 9 work together to fight against these robots. At last, they succeed (成功). People control the robots again. I think the movie is very interesting. 10 you have interest in it, why not go and see it? | ||||
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