48.MO collected the anecdotes and memories of his family in C, his native country,and these are stories that are told in his memior.

　　Told these stories

　　点评：注意平行结构和动词时态即可。不要被句子中的两个名词性成分(anecdotes and memories of his family in C，his native country)迷惑，其实还是收集和讲述(collected和told)。

　　49.The PC that was being mediated by the president,but now the countries are adamently refusing to compromise their positions.

　　The president had mediated the PC,but the countries are now adamently refusing to compromise their positions.

　　点评：注意时态。过去已经调停了，但国家之间又开始争斗起来了。而且用主动而不用被动。

　　50.By the time IGFCTYFN,my brother has practiced law for five years.

　　will have been practicing

　　点评：By the time后用的是现代时(网打上去了，这里挺重要的。。。)，所以用将来完成时。

　　51.The OT’s increased capacity allows divers to discover new species that congregate and feed close to the bottom of the ocean.

　　Right!

　　点评：呵呵，我也不知道该怎么评，对的就是对的么(汗一个。。。。。。)

　　52.(常考题：虚拟)If the concert had begun later,the conductor might have succeed in giving the difficult last –minute correction for the symphony to the orchestra.

　　Right!

　　点评：这种形式的题很多，记住就可以了。“If…had/have done sth,…would/might have done…”

　　53.The domestic cat of which there are more than 40 breeds,is a member of the feline family.

　　Cat,of which there are more than 40 breeds

　　cat,of which there are more than 40 breeds

　　点评：说明一个事物中间插入修饰时，注意修饰方法(倒装等)如“of which”

　　54.It is hard for me to imagine that 100 years ago this area was undeveloped swamp land,but it has since become high-rise apartment buildings.

　　land that has since become high-rise apartment buildings

　　55.The state of NJ is one of he smallest states in the union,being also the most densely populated.

　　although one of the smallest states in the union,is

　　点评：这种题超多，讲如一个地方人口地方小但人口密集看上去是因果实际是转折(小地方确人多)。故用“Although…,is…”同时记住一点：这种题中带“Being”的选项90%以上都是错的。

　　56. Airline such as R and E are able to find alternative,cheap landing strips and are therefore able to pass saving on to their customers.

　　Right!

　　点评：主语为Airline，后面就不要再改换了。直接用动词顺接下去即可。

　　57.U and T schools offer teenagers the opportunities to start working as electricians,plumbers,auto mechanics,and other jobs immediately after graduation.

　　and in other jobs

　　点评：注意work as(某职业人士)和work in XX job (职业名称)的不同搭配。

　　58.Fear prevents some people from speaking out against wrongdoings;ignorance,others;a lack of morality,only a few.

　　Right!

　　点评：这种形式似乎不多见，但其实是对的。并列结构很重要。如果实在不习惯句式那就依靠这个原则判断。