用平光眼镜看近处物体时，平光眼镜将产生的屈光度为() 。
查看答案
某患者丧失了红、绿颜色的辨别力，那么他()。
A. 所有颜色都不能辨认
B. 不能辨认红色
C. 不能辨认绿色
D. 不能辨认蓝色
当物距不为零时，物体经凸球面反射镜的成像为()
A. 缩小正立虚像
B. 缩小倒立实像
C. 放大正立虚像
D. 放大倒立实像
When did Ms. Peterson leave MacBride Museum？
At 5 p.m.
B. At 6 p.m.
C. At 8 p.m.
D. At 9 p.m.
What is NOT stated in the event？
A. Its guests are encouraged to reply to this letter.
B. It was held previous year.
C. It will take place for two days.
D. It will be held in the Golden Gate Hotel.
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