At present,_____ number of students are near-sighted and, what’s worse, _____number of them is increasing.

A．a; the

B．a; a

C．the; the

D．the; a

去遮盖试验，若去遮盖眼后右眼移向下方或左眼移向上方者为（）。

A、隐性外斜

B、右上隐斜

C、隐性内斜

D、左上隐斜