三七的主治病证是（）
A.出血证
B.跌打损伤，瘀血肿痛
C.胃热呕吐
D.虚损劳伤
E.水肿，黄疸
参考答案：A, B, D
Breakfast is ______ meal of the day. It provides us with energy after a long night without food.[ ]
A. important
B. more important
C. the most important
D. very important
洞内导线应尽量沿（）布设。
A.导线点
B.控制网
C.路线中线
D.视线范围
