男性,57岁,行胃大部切除术。手术后发生口角炎、周围神经炎等,提示膳食中缺乏()。
A.蛋白质
B.膳食纤维
C.维生素A
D.锌
E.B族维生素
参考答案:E
Many people _____the successful spacewalk as another milestone in the history of Chinese space flight. [ ]
A. contributed to
B. owed to
C. compared to
D. referred to
「勉強」的意思是()。
A、勉强
B、学习
C、运动
D、季节