104. Nuclear fusion is the force that powers the Sun, the stars, and hydrogen bombs, merging the nuclei of atoms and not splitting them apart, as in nuclear reactors.

(A)      merging the nuclei of atoms and not splitting them apart, as in nuclear reactors

(B)      merging the nuclei of atoms instead of splitting them apart, like nuclear reactors

(C)      merging the nuclei of atoms rather than splitting them apart, as nuclear reactors do

(D)      and merges the nuclei of atoms but does not split them apart, as is done in nudear reactors

(E)      and merges the nuclei of atoms, unlike atomic reactors that split them apart

100．Proponents of artificial intelligence say they will be able to make computers that can understand English and other human languages，recognize objects，and reason as an expert does--computers that will be used to diagnose equipment breakdowns, deciding whether to authorize a loan，or other purposes such as these．

(A)  as an expert does-computers that will be used to diagnose equipment breakdowns，deciding whether to authorize a loan，or other purposes such as these

(B)  as an expert does，which may be used for purposes such as diagnosing equipment breakdowns or deciding whether to authorize a loan

(C)  like an expert-computers that will be used for such purposes as diagnosing equipment breakdowns or deciding whether to authorize a loan

(D)  like an expert，the use of which would be for purposes like the diagnosis of equipment breakdowns or the decision whether or not a loan should be authorized

(E)  like an expert，to be used to diagnose equipment breakdowns，deciding whether to authorize a loan or not，or the like

第一题选C，og解释说要对动作进行比较。

第二题选C，看了以前的问答，似乎很多人也认为C更好，like是直接对expert和computer来比较。

我的疑问是，第二题看起来更像是比较动作啊，前面列了一大串动作，而且“reason like an expert"这里"do like sb"这个结构也看起来很怪不是吗？我觉得更顺口的是"do as sb do"。

请不吝赐教，谢谢。

个人是这样理解的：

do sth like sb放在句尾与原句紧密相连是一种GMAT不怎么常见的用法

但是也是正确的表达法：

举几个例子，Mary speaks English like a native speaker.

                 Mary speaks English as a native speaker does.

这两句话语法都没错，不过意思上有一点点区别

前者 Mary speaks English like a native speaker. 说明Mary尽管英语很好，说得像native speaker了，但是毕竟还欠火候

后者 Mary speaks English as a native speaker does. 说明Mary的口语很好完全达到了和native speaker一个水平

细微的比较 原文中 实际上 like an expert 是更为准确地用法

当然当时我做这个题目的时候并不是靠着as和like的区别选出C来的 别的选项错误都很明显

BY书里的规律：

like + n. 表比较

（just）as + n. 表作为

(just)as + sb do 表比较

such as + n./ing短语  表举例

like 这个词在GAMT里不能够表示举例。

或许上面的规律能够帮楼主理解这个题目。

谢谢。

正如你所说的，like + n. 表比较，(just)as + sb do 表比较

同样是表比较，有何区别呢？

LZ好好看下啊~

like后面接的是名词，性质像

act后面接的是句子，动作像

那么我举例的第二题呢？

感觉明明是动作的对比啊？

让LZ弄糊涂了，这里的reason是动词,与understand和recognize并列，like是介词，that是expert-computer的同位语

完了，绕迷糊了

as后面接 词

act后面接 句子 既然是句子就要主谓宾齐全

谈一下对104题的看法。

我原来是选B的，但是看了答案之后才知道为何自己错了，为何不能用like，一定要用as...do

因为使用like的话，比较对象就比较模糊了，就不知道这个nuclear reactors是同nuclear fusion is the force作比较，还是同nuclear fusion merging...作比较。而如果使用as...do...则很明确，这是同merging比较，否则就应该加as...is...同is the force部分作比较。

这只是我自己的灼见，还望大家指正。

我做语法题，最害怕就是做语法的比较题，虽然很多人都说比较是最简单的，不过这对于我来说是一个难点，经常要错。无奈中...