色甘酸钠临床使用方法是
A．口服B．肌注C．皮下注射D．静脉注射E．喷雾吸入
参考答案：E
解析：色甘酸钠口服不吸收，必须采用喷雾吸入。
Before going abroad, she spent as much time as she could_____her spoken English. [ ]
A. practise
B. to practising
C. practising
D. to practise
