Her uncle is in Toronto, she never ______ him. [ ]
A. sees
B. see
C. to see
D. seeing
答案:A
(72~76题共用备选答案)
维生素C缺乏症( )
A.吸吮无力,声音嘶哑B.食欲差,身材矮,匀称C.眼结膜干燥,角膜失去光泽D.X线检查临时钙化带下方有透光带状区E.X线检查骨骺端钙化带消失,呈杯口状