由药品研究、生产、经营、使用等七大部分组成的是
A. 药事
B. 药品
C. 药学
D. 药师
E. 执业药师
According to the text, bathing removes dry skin flakes because.
A. the soap draw it off the body
B. the skin hydrates
C. the circulation of blood expands skin particles
D. the change in blood pressure releases the film
易进入脑脊液的药物是
A. 磷酸哌嗪
B. SD
C. 青霉素
D. 维生素A
E. 核黄素
The word "thorny" (Line 5, Para. 1) most probably means" ______ ".
A. prickly
B. difficult
C. misunderstood
D. sharp
微信支付 
支付宝支付