1. The university authorities did not approve the regulation, _________________ (也没有解释为什么).
　　2.Jane is tired of dealing with customer complaints and wishes that she _________________（能被分配做另一项工作）
　　3.John rescued the drowning child_________________ (冒着自己生命危险).
　　4.George called his boss from the airport but it _________________ （接电话的却是他的助手）
　　5.Although he was interested in philosophy, _________________（他的父亲说服他）majoring in law.

答案详解：
　　1.nor did they make any explanation / nor did they give the reason for doing so
　　本题考察了两个知识点。① nor的倒装句用法，后半句表示“也不”的否定意义，注意助动词的时态与上半句保持一致；② 对某事做出解释的表达，考察了汉译英中动词转名词的技巧，explain → explanation，或者nor did they give the reason for doing so同样可以。
　　2.could be assigned (to) another job
　　本题考察了wish从句的虚拟语气用法（can→could）和“分配某人做某事”的词组搭配，assign sb. to sth. 或者assign sb. sth.
　　3.at the risk of his own life
　　本题考察了“冒着…的危险/风险做某事”的词组搭配，可以用at the risk / expense of one’s own life（冒着某人的生命危险做某事）
　　4.①was his assistant who answered / picked up the phone；②turned out that his assistant answered / picked up the phone
　　该句比较灵活，在句法上，既可以使用强调句结构，也可以采用turn out的惯用搭配；在“接电话”的表达上，可以用pick up / answer the phone。强调句结构为it be sb. who do sth. ,而turn out变化则较多，可以用turn out to be sb. who do sth.或者turn out + that + 从句。
　　5. his father persuaded him into / talked him into
　　本题考察“说服某人做某事”的表达，persuade / talk sb. into doing sth.