问题
单项选择题 A1/A2型题
与影像密度、对比度、锐利度都有关的是（）
A.管电流
B.增感屏
C.曝光时间
D.摄影距离
E.定影速度
答案
参考答案：B
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与影像密度、对比度、锐利度都有关的是（）
A.管电流
B.增感屏
C.曝光时间
D.摄影距离
E.定影速度
参考答案：B
At the beginning of the world, it was Bear who owned Fire. Bear and his people carried Fire with them ________ they went. One day, Bear and his people came to a great forest, where they found many acorns(橡子) ________ on the forest floor. Bear set Fire at the edge(边缘) of the forest, and he and his ________ began eating acorns. They went further and further away from Fire, eating the delicious acorns and looking for________. Fire blazed (发出火焰) up happily for a while ________ it had burned almost all of its wood. It started to smoke. "_______ me! Feed me!" Fire shouted to Bear. But Bear and his people did not hear Fire's ________. At that moment, Man came walking through the forest and saw the small Fire. "What should I feed you?" Man asked, He had________ seen Fire before. "I eat sticks and wood of all kinds," Fire said. Man ________ a stick and put it on Fire. Man got a second stick and then a third one... By this time, Fire's hunger was satisfied. Man warmed himself by the Fire, enjoying the changed colors. Man and Fire were very happy together, and Man fed Fire sticks whenever it got hungry. And now Fire ________ to Man.
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