需要水飞法粉碎的药物是( )
A. 冰片
B. 水杨酸
C. 麦冬
D. 朱砂
College education provides more __ for a bright future.
A. lessons
B. courses
C. opportunities
D. subjects
He had a __ to his wife who gave him the money to start his business.
A. job
B. debt
C. chance
D. career
混合是将大块物料破碎成较小的颗粒或粉末的操作过程。
A. 对
B. 错