问题
单项选择题 A1/A2型题
显影的作用是（）
A.形成潜影
B.形成感光中心
C.形成显影中心
D.形成光密度影像
E.形成灰雾中心
答案
参考答案：D
解析：显影的作用是用化学（或物理）的方法将已感光的卤化银还原成Ag原子而形成光密度影像。
搜题请搜索小程序“爱下问搜题”
显影的作用是（）
A.形成潜影
B.形成感光中心
C.形成显影中心
D.形成光密度影像
E.形成灰雾中心
参考答案：D
解析：显影的作用是用化学（或物理）的方法将已感光的卤化银还原成Ag原子而形成光密度影像。
阅读下面的短文并完成ID卡。（6分） Nick is my pen pal. He is 12 years old. He is from Canada. He lives in Ottawa. He speaks English and French. His favorite subject is science. He likes Chinese, too. And he says he can speak a little Chinese, but he can’t write in Chinese. Nick likes sports, too. He likes swimming best. He goes swimming on weekends with his father. He says he can swim very well. He doesn’t like Physics. He thinks it too difficult. Nick has a big family. There are eight people in his family, his grandpa, grandma, father, mother and his brothers and sisters. He has two brothers and two sisters. They are Bob, Tim, Jane and Susan. They are happy!
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