A.眼前50cm~8.3cm B.眼前10cm~∞ C.眼前50cm~1m D.眼后50cm~12.5cm
A.眼前40cm~無限遠(yuǎn) B.眼前40cm~1.0m C.眼前28.6cm~40cm D.眼前50cm~1.0m
A.12.0D B.10D C.8D D.5D