not so much that...,as that...与其说...不如说...

b中to have success也wordy，不如
to succeed

as is the case with noun，sth……，就如……一样
而不是As with the case of +n

应该是the discovery was not announced
对比选项

e
The first sighted pulsar 错

as high as 应该接一个具体值，而不是一个范围
而且有两种可能的并列，那就需要句子后面的错误去排除是哪一种

with 用+n，介词+n
d这样说很歧义，wordy

细节题，一定要定位，不要凭着记忆想！会被选项迷惑啊

得做笔记和一定要回原文找细节，不要凭着记忆选，因为选项都是一些迷惑选项，很容易就被弄晕了！！！

unlike N/C, its programs were produced not by engineers at their computers, but by skilled machinists,

and also to a geographical isolation greater than that of many other Native American groups, an isolation that limited both cultural contact and exposure to European disease啊阿啊 定位

Granted, Switzerland and the United States diverged in the degree to which the expansion of industry coincided with the degree of urbanization: only 29 percent of the Swiss population lived in cities of 10,000 or more inhabitants by 1920。E看错了，理解成了单纯的人多而不是百分比大，眼瞎

SVO than结构里比较的是两个主语的话，难道不是需要带上动词吗…这题咋没带。只能靠排除其他错误选项了
重建规则：A do B than C通常是错的，如果语意不会引起明显的歧义，也可以保留这类选项。

c，higher和as不idiomatic
d，该选项的比较重心在动作上，而不是在speeds上，因此比较标志higher放在了介词短语at higher speeds里，而不是speeds的定语从句里，所以不能拿一个句子和that（speeds）相比，在d的基础上，可以有正确答案would enable customers to receive internet data over regular telephone lines a tmuch higher speeds than customer could do currently and possibly.
e，比较对象正确

xy=2
y=2/x
x

64-48=16%
16%/64%=25%

首先，做题时纠结平行问题，认为convert A to B则A，B需要平行。其实gasoline-powered trucks 和 （trucks） run on natural gas是平行的，只是省略了trucks。
B项错在改变了语意。2000 trucks that are powered by gasoline表示部分是用gas line的，而2000 gasoline-power trucks是2000辆全部都是。
That从句跳过in LA修饰trucks不算完全错误。

Some anthropologists believe that。。。——that。。。破折号前后that从句平行。
C少了at ----“at some time”

2^15+2^16+2^17
提出来2^15
=(1+2+4)*2^15
=1*2^15+2*2^15+4*2^15
=7(2^15)

1. 伴随状语doing修饰主句的主语，而experimental subjects如果做causing的主语则逻辑不通；
2. immune to是免疫某种细菌or疾病，而immune from是逃脱某种duty or fee