皮肤过敏试验阳性,可采用脱敏注射的药物是( )
A.青霉素
B.普鲁卡因
C.破伤风抗毒素
D.细胞色素C
参考答案:C
I always prefer _______ a bike rather than _______ to work.
A.riding, drive
B.to ride, drive
C.ride, driving
D.to ride, driving
简述记忆摹仿笔迹。