下列哪项是破伤风患者最早出现的临床表现
A．牙关紧闭
B．面部苦笑
C．角弓反张
D．阵发性抽搐
E．大汗淋漓
参考答案：A
I'm not good at English. Can you give me _____.[ ]
A. some advices
B. some advice
C. a advice
D. an advice
简述鸟类与爬行类的共同特征
