1. Educating patients about receiving surgical procedures is becoming an important issue, ( ) it can reduce anxiety and uncertainty while helping to hasten decisions for undergoing time sensitive surgeries.

　　A. therefore

　　B. as

　　C. if

　　D. however

　　【答案】B。教育病人接受外科手术正成为一个重要的问题，因为它可以减少焦虑和不确定性，同时有助于加快进行时间敏感手术的决定。A意为“因此”;B意为“因为”;C意为“如果”;D意为“然而”。故正确选项为B。

　　2. The ( ) of their years of education was 10.96 with a minimum of 7 and a maximum of 17.

　　A. mean

　　B. median

　　C. mode

　　D average

　　【答案】D。他们的平均受教育年限为10.96年，最低为7年，最高为17年。从词意判断，A选项“手段、意义”;B选项“媒体、介质”;C选项“模式”;D选项“平均”。故正确选项为D。

　　3. Like no previous technology, mobile technology has spread ( ) an unprecedented pace in the last few years.

　　A. at

　　B. in

　　C. on

　　D. with

　　【答案】A。以前没有任何一项技术普及速度像移动技术那么快。at an unprecedented pace为固定搭配，意为“以前所未有的步伐/速度”。故正确选项为A。

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