治疗阿米巴痢疾疗效最佳的四环素类抗菌药是()
A.多西环素
B.四环素
C.米诺环素
D.青霉素
E.土霉素
参考答案:E
After the robbery, the jewelry shop fixed an alarm system ______ further losses. [ ]
A. for
B. from
C. against
D. toward
地陪欢迎词包括哪些基本内容?