保证担保的范围包括主债权及（）和实现债权的费用。
A.主债务
B.利息
C.违约金
D.从债务
E.损害赔偿金
参考答案：B, C, E
自然铜炮制后得以增强的作用是（）
A.收敛生肌
B.收敛止痒
C.散瘀止痛
D.平肝潜阳
E.平肝止血
The company’s training plan was designed to help the employees to improve their work habits and ______.
A. proficiency B. sufficiency C. insufficiency D. efficiency
