1.New techniques in thermal-scanning photography,a process that records radition from surface areas,makes it possible to study the effects of calefaction,or warming,of a fiver in greater detail than ever before.

B make it possible to study,in greater detail,the effects of calefaction,or warming,of a fiver than ever before.

C have made it possible to study in greater detail than ever before the effects of calefaction,or warming,of a fiver

D make possible the study of the effects of calefaction,or warming,of a fiver in greater detail than it ever was before.

E has made it more possible than ever before to study in greater detail the effects of calefaction,or warming,of a fiver

答案是c，为什么不是B？ 而且如果这道题改为考主谓一致的话，谓语动词应该用单数还是复数？根据techniques ，还是a process?

2.Bob became Sidney Bechet's student and protege when he was nineteen and,for a few years in the 1940's,came as close to being a carbon copy of the jazz virtuoso in performances as anyone has ever come.

B as anyone ever had been

C as anyone ever had done

D that anyone ever did

E that anyone ever came

答案是A，为什么不选C，这句话是什么意思?

3.That the new managing editor rose from the publication's "soft" news sections to a leadership position is more of a land markin the industry than her beinga woman.

B being a woman is

C her womanhood

D that she was a woman

E that she is a woman

答案是E,为什么不是C，这个是在比较什么？

第一道中，由于最后是THAN EVER BEFORE因为时态是一般现在时或者现在完成时，再看前面a process that records radition from surface areas，句子的逻辑应该是这个方法之所以能够有后面的作用，是因为它records了radition。。。那么后面的时态应该是用完成时。而且主谓一致应该是PROCESS的单数，因为PROCESS是New techniques in thermal-scanning photography的同位语

第二道我也不太懂，因为前面是一般过去时，后面却跟了现在完成时。不过HAD DONE在GMAT语法中本来就是一出现就必错的搭配。。。

第三道不了。。。

than her beinga woman是A?

第一题如果是用单数，答案就不是c了阿，难道答案错了？ make possible, make it possible 有什么区别用法？以前上托福班的时候学过的，现在全忘了。

第三题我给打错了 不好意思 应该是than her being a woman.

第一题，make是new techniques的动词，所以是复数，又因为结尾有ever before。所以应该用have made

第二题，similar elements in a sentence must be parallel to each other..代表similar elements出现的一个关键词就是as..as..这道题中出现了as..as..，所以前后应该一致，前面说了as close to being..，后面也应该用been..（另，be表示状态，do表示动作）

第三题，womanhood这样的词一般不会用吧。。反正我是从来没有见过这个词的具体用法。is more of a land markin the industry than her being a woman..说实话，这道题我可能也会错，因为我会犹豫原句和E都有可能对。这道题考的是Idioms吧，native的speaker应该不会说her being a woman,会说she is a woman。而事实上，也确实很少代词+ being sth这样的形式。

第二题中A选项has ever come 就是和题目中的came 对应了是吧！那么是不是说在做平行结构的时候，as...as...第二个as后面的东西要和第一个as前的东西对应阿？