防治流行性脑脊髓膜炎的首选抗菌药物（）
A.磺胺嘧啶
B.链霉素
C.庆大霉素
D.多粘菌素B
E.卡那霉素
参考答案：A
—I’m going to visit my aunt this evening. She was very kind to us when we were at her home last time. Remember?
— Of course I do. __________.
A．That sounds fun
B．It’s very kind of you
C．I hope it won’t be long
D．Give my best wishes to her
下面程序段执行后b的值是______。 Integer integ =new Integer(9)；boolean b = integ instanceof Object;
A．9 B．true C．1 D．false
