Remote administration types are an example of one kind of (71) malicious software, the Trojan horse, or more simply Trojan. The purpose of these programs isn’t replication, (72) to penetrate and control. That masquerade as one thing when in fact they are something else, usually something destructive. There are a number of kinds of Trojans, including spybots, (73) report on the Web sites a computer user visits, and keybots or keyloggers, which record and report the user’s keystrokes in order to discover passwords and other confidential information.

RATS attempt to give a remote intruder administrative control of an infected computer. They work as (74) pairs. The server resides on the infected machine, while the client resides elsewhere, across the network, where it’s available to a remote intruder. Using standard TCP/IP or UDP protocols, the client sends instructions to the server. The server does (75) it’s told to do on the infected computer.

（75）处填（）。

A．that

B．what

C．which

D．those

下列各句中加点的成语使用不恰当的一句是（ ）

A．回到住所，我饶有兴味地翻看着一张张剧照，耳边又隐隐奏起城隍庙小戏台的流云之响和绕梁之声。

B．近年来，新闻学专业越来越热，许多学生也跟着蠢蠢欲动，纷纷选学这一专业，希望将来能做一名新闻工作者。

C．故乡变化真大，高楼拔地起，小路变通街，不毛的小山被夷为平地，建成了现代化的开发区，真是沧海桑田啊！

D．为防止有毒豆制品再次流人市场，有关部门迅速采取釜底抽薪的办法，查封加工窝点，堵住了生产的源头。