40岁以下成人血压大于（）毫米汞柱称为高血压。
A.120/80
B.110/70
C.90/60
D.150/90
参考答案：D
—Does your brother like action movies?
—_____. He thinks they are exciting. [ ]
A. Yes, he does
B. Yes, he is
C. No, he isn't
D. No, he is
Cisco PIX 525防火墙用来允许数据流从具有较低安全级接口流向较高安全级接口的配置命令是______。
A．fixup B．conduit C．global D．nameif
