大学英语六级考试阅读单词：22

　　[背景了解]
　　文章取自于2004年6月的阅读真题，是关于美国移民系统的，
　　选段有点长，希望耐心看下，自己先猜下红色单词的意思吧
　　[文章部分]
　　But since Sept. 11, it's become clear that terrorists have been shrewdly factoring the weaknesses of our system into their plans. In addition to their mastery of forging passports, at least three of the 19 Sept. 11 hijackers (劫机者) were here on expired visas. That's been a safe bet until now. The Immigration and Naturalization Service (INS) ( 移民归化局 ) lacks the resources, and apparently the inclination, to keep track of the estimated 2 million foreigners who have intentionally overstayed their welcome.
　　[单词学习]
　　terrorist n.恐怖分子
　　shrewd adj.有准确判断力和常识的；精明的；敏锐的
　　expire v.期满, 终止, 呼气, 断气, 届满
　　inclination n.倾斜, 弯曲, 倾度, 倾向, 爱好
　　keep track of 9与某人或某事保持联系
　　[课后作业]
　　今天的作业就是翻译下面几个句子,来试下吧
　　1.The terrorists are threatening to blow up the hijacked airliner.
　　2.He was too shrewd a businessman to accept the first offer . .
　　3.When does your driving licence expire?
　　4.I have little inclination to listen to you all evening.
　　5.It's hard to keep track of all one's old school friends.
　　答案：
　　1.恐怖分子扬言要炸毁劫持的客机。
　　2.他是个非常精明的商人,不可能接受第一个报价。
　　3.你的驾驶执照何时到期？
　　4.我可不愿意一晚上都听你说话。
　　5.与中学时的所有老校友都保持联系是很困难的。