11.appropriate 适当的，合适的
　　例：This new education system is more appropriate to the needs of the students .
　　这种新的教育体系更符合学生的需求。

　　12.as is the case with 同样的情况
　　例：Parents are the main source of college funding , as is the case with most students .
　　父母是学生大学学费的主要来源，大多数学生都是这种情况。

　　13.as we know it 像我们知道的那样
　　例：If there were no electricity , our world would not be able to operate as we know it .
　　如果没有电，世界就不会是现在的样子了。

　　14.at any cost 无论如何，不惜任何代价
　　例：Becatse of the belief that lucky numbers can bring good luck , they will try to obtain lucky numbers for things such as a car license plate at any cost .
　　因为相信幸运数字能带来好运，他们会设法使用幸运数字，如在买车时会不惜一切代价买到有幸运数字的车牌。

　　15.at sb.'s disposal 任某人处理，供某人使用
　　例：The library has a large number of deaths from heart disease is generally attributed to improvements in diet .
　　图书馆有大量的参考书可供同学们使用。

　　16.attribute sth . to sth ./ sb .把……归因于（或归功于某事/某人）
　　例：The fall in the number of deaths from heart disease is generally attributed to improvements in diet .
　　人们普通将心脏病死亡人数的下降归功于饮食方面的改善。

　　17.avenue 渠道，办法
　　例：We explored every possible avenue , but still couldn't come up with a solution .
　　我们寻找每一种可行的渠道，但仍然找不到解决的办法。

　　18.average person 普通人，一般人
　　例：Einstein's theory is really too difficult for the average person to understand .
　　爱因斯担的理论对于普通人来说是很难理解的。

　　19.be informed of sth .获悉，得知
　　例：People are informed of products and services by advertisements on TV .
　　人们通过电视广告了解到了各种产品和服务。

　　20.be died to 被束缚着，被牵制着
　　例：Nowadays many people , especially young people do not like to be tied to a steady job .
　　现在许多人，尤其是年轻人，都不喜欢永远只做一种固定的工作。