长期食用缺乏维生素（）的食物会导致夜盲症，失去对黑暗的适应能力。
A、A
B、D
C、E
D、K
参考答案：A
---- Isn’t amazing that such a good player ____ have failed to be elected to compete?
----Yes, but that is life.
A．would
B．might
C．must
D．should
凯氏带
