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问题
问答题 简答题
何谓瞳孔调节反射?
答案
参考答案：
调节反射是注视近物时引起的两眼球会聚(内直肌收缩)及瞳孔缩小的反应。
选择题
—Why didn't you go to the cinema yesterday?
—Because I ____ the film before.
A. had seen
B. have seen
C. have watched
D. has watched
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单项选择题
CGA、EGA和VGA标志着（）的不同规格和性能。
A、打印机
B、存储器
C、显示器
D、硬盘
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