these竟然能够单独做主语？

Yuxin6

这个是Ron的回答~可以参考下~
if this is really a gmatprep problem, i would suggest that you check the original for transcription errors, as all 5 of these choices are simply wrong.

to wit:
(a)
* poor parallelism. (a correct gmat choice would almost always include much closer parallelism, such as ...they do blah blah blah, like exercise, and they do blah blah blah, like morphine)
* can't use 'these' as a standalone pronoun. (this/that/these/those are only acceptable as adjectives - these people, that hypothesis, etc. - or as part of parallel constructions - the symphonies of beethoven vs. those of bach, etc.)

(b)
faulty comparison (a pain-relieving effect is compared directly to morphine, rather than to the pain-relieving effect of morphine as obviously intended)

(c), (d), (e) as explained by the guest poster above me.


[editor: apparently this problem is legitimate. it's one of the worst official problems i've seen ... but we have to learn from it]

heymomomomomo

Yuxin6 发表于 2016-9-3 10:33
这个是Ron的回答~可以参考下~
if this is really a gmatprep problem, i would suggest that you check the ...

怎么我怎么找都找不到这道题在manhattan论坛上的链接.....
求一下链接可以吗??

Yuxin6

heymomomomomo 发表于 2016-9-9 20:04
怎么我怎么找都找不到这道题在manhattan论坛上的链接.....
求一下链接可以吗?? ...

https://www.manhattanprep.com/gmat/forums/besides-adding-complementary-flavors-t3219.html