prep里的一道题，求解答

haizeiwang8888

89.(29225-!-item-!-188;#058&004220)

Complex human traits such as artistic talent or social skill are likely to be shaped by thousands, if not tens of thousands, of the 80,000 or so genes in the human genome.

(A) such as artistic talent or social skill are likely to be shaped by thousands, if not tens of thousands, of the 80,000 or so

(B) such as artistic talent or social skill are likely shaped by thousands, if not tens of thousands, of 80,000 or so of the

(C) such as artistic talent or social skill is likely to be shaped by thousands, if not tens of thousands, of 80,000 or so of the

(D) like artistic talent or social skill is likely to be shaped by thousands, if not tens of thousands, of the 80,000 or so

(E) like artistic talent or social skill are likely shaped by thousands, if not tens of thousands, of the 80,000 or so

请问a里面最后那个so在文中是什么意思？有什么作用啊

haizeiwang8888

3.    (28949-!-item-!-188;#058&004110)

还有一道，请问下面这道题人类为什么要被动呢？
The number of plant and animal species that humans are known to have forced to extinction in the last half millennium is over 800.

(A) humans are known to have forced to extinction
(B) humans are known as having forced to become extinct
(C) humans are known for forcing to become extinct
(D) are known that humans forced to become extinct
(E) are known as having been forced to extinction by humans

缺氧

第一道题，是or so ，意思是大约，大概

缺氧

第一个题答案是选A吗？

gwang5

我觉得第一题选E吧。如果是such as引导应该作为同位语。traits是复数。

ivan33

答案是B吧么？
DE应该都不对，因为GMAT中举例不可以用like.
or 前后要平行一致,都是XX of 什么的。所以排除A。
complex human traits 是复数。所以不可以选C。
至于so.  if not tens of thousands, of the 80,000 or so genes 把省略掉的添进去，应该变成： if not tens of thousands, not tens of the 80,000, or not tens of genes.  so 代替 not tens.
呵呵~这是我的理解。

doitkevin

C吧，D选项80千前不需要加the