1. Teratomas are unusual forms of cancer because they are composed of tissues such as tooth and bone not normally found in the organ in which the tumor appears:
A because they are composed of tissues such as tooth and bone
B because they are composed of tissues like tooth and bone that are
C because they are composed of tissues , like tooth and bone, tissues
D in that their composition, tissues such as tooth and bone, is
E in that they are composed of tissues such as tooth and bone, tissues
2. The Baldrick Manufacturing Company has for several years followed a policy aimed at decreasing operating costs and improving the efficiency of its distribution system.
A aimed at decreasing operating costs and improving
B aimed at the decreasing of operating costs and to improve
C aiming at the decreasing of operating costs and improving
D the aim of which is the decreasing of operating costs and improving
E with the aim to decrease operating costs and to improve
这两道语法题我不太明白第一题我权衡一下，觉得A比较合适，但正确答案是E，我很不理解，如果是E那么逗号前后的句子结构应该怎么划分，tissues和found之间是什么关系？对于第二题我觉得答案E比较合适，但正确答案是A，我又茫然如果是A，那么aimed是什么动词形式，起什么作用？恳请各位高手指点迷津，谢谢！（该题出自OG）
我觉得第二题是过去分词做定语修饰policy
而且 aimed at decreasing operating costs and improving显然要比
with the aim to decrease operating costs and to improve简洁，而且有动词不用名词
第一题后面的一个tissues是个同位语。若选A会有歧义，可以认为 not normally found 是修饰限定其紧跟着的单词bone的，与原意不符。GMAT语法选项中出现原选项没有的新名词指代前句中的部分内容时往往就是正确答案。
第二题同意tiangel mm 的。
1: because/in that的区别,而且A里的"THEY"指代模糊
2:aimed做分词 sth aimed at n./doing 固定结构
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