在下述药品中，遇光线最不容易引起变化的是
A．维生素A B．肾上腺素C．水杨酸钠 D．左旋多巴E．双八面蒙脱石
参考答案：E
The manager seemed to be doubtful about my ability, _______ I could see from the expression on his face.
A．this
B．where
C．that
D．which
舌癌多发于
A．舌尖
B．舌缘
C．舌背
D．舌腹
E．舌根
