There _____ four people in my family. [ ]
A. is
B. are
C. have
D. has
答案：B
下列哪一种抗生素在体内骨及关节中分布较多
A．青霉素
B．多黏菌素B
C．克林霉素
D．克拉霉素
E．吉他霉素
