选一选,再涂色。(我要把错误的字涂成黑色。)
答案:B
若罗红霉素的剂型拟以片剂改成注射剂,其剂量应()
A.增加,因为生物有效性降低
B.增加,因为肝肠循环减低
C.减少,因为生物有效性更大
D.减少,因为组织分布更多
E.维持不变
He told us that the best way to ______ respect was to devote ourselves to ______ high grades.
A.earn; achieve
B.earn; achieving
C.earning; achieve
D.earning; achieve