进一步检查中哪一项是不适合的
A．B超检查
B．膀胱镜检查
C．细菌学检查培养
D．药物敏感测定
E．尿沉渣涂片细菌学检查
参考答案：B
-Must I send my uncle an e-mail now, Dad?
-No, you ____.You____ do that after you finish your homework.
A．couldn’t; may
B．can’t; can
C．needn’t; can
D．may not; must
报废
