PPP协议支持的验证方式有:()
A、PAP
B、MD5
C、CHAP
D、SAP
参考答案:A, C
She must be looking forward as much to his return as he himself is to _______ her.
A.see
B.have seen
C.seeing
D.be seeing
果园里种了16行葡萄,每行24株,每株产葡萄200千克,果园里 * * 葡萄多少千克?列式应为[ ]
A.200÷16×24
B.200×24×16
C.24×16÷200