【Glossary】
1.plaque n. 匾，饰板，名牌，徽章，[医]齿菌斑
如：A small card or plaque, such as a nameplate on a door.
小牌一种小卡片或牌，如门上的姓名牌
A plate or plaque, as on an office door, inscribed with a name.
名牌记有名字的牌或匾，如挂在办公室门上
2.intrusive adj. 打搅的，侵扰的
如：Intrusive viruses are hard to write and very difficult to remove without damaging the host file.
入侵型病毒难以编写，在去除它们时常常会破坏主文件。
3.Opt for 选择
如：More seriously, they have now renounced parliamentary politics and opted for direct action, ranging from civil disobedience and demonstration to bullets and gelignite.
更为严重的是，他们已经放弃了议会政治而选择了直接行动，从非暴力反抗、示威到子弹和炸药。
The council Opted for a bypass to carry traffic away from the town
市政委员会选择了修建一条旁道的办法来减轻市中心的交通拥挤。
4.Purchase vt. 买，购买
如：You can rely on your solicitor's professionalism in dealing with the house purchase.
你尽可依靠律师处理购房事宜。
The purchase price is less if you pay by cash.
付现金的话，价钱便宜些。
5.gradual adj. 逐渐的，逐步的
如：I advocate a policy of gradual reform.
我拥护逐步改革的政策。