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【单选题】
下列关于防火墙技术的说法不正确的一项是()。A.
按防火墙的应用部署位置分为边界防火墙、个人防火墙和混合防火墙三大类
B.
代理防火墙的最大缺点是速度比较慢，当用户内外部网络网关的吞吐量要求比较高时，代理防火墙就会成为内外部网络之间的瓶颈
C.
包过滤防火墙工作在0SI网络参考模型的传输层和应用层它根据数据包头源正地址、目的IP地址、端口号和协议类型确定是否允许通过
D.
防火墙的准则可以概括为以下之未说明许可的就是拒绝，未说明拒绝的均为许可
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【简答题】—Does he tell you if he _____ tomorrow? —No, he doesn't. But if he _____ , I'll call you up. [ ] A. will come; will come B. comes; comes C. will come; comes D. comes; will comes
【简答题】'Who is responsible for sending out misinformation?' 'Most of the fault lies _____ the administration.' A．in B．to C．on D．with
【单选题】Why hasn’t he come?________ on time, we would have to put off the trip.
A.
If he doesn’t come
B.
If he will not come
C.
If he didn’t come
D.
If he wouldn’t come
【单选题】听力原文：M: Tony said he would help me if he had time. W: He often offers his help, but he never seems to have time. Q: What does the woman say about Tony? (15)
A.
He doesn't keep his promises.
B.
He is quite busy with work.
C.
He can keep his promises.
D.
He never trusts anybody.
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