88. The Emperor Augustus, it appears, commissioned an idealized sculpture portraint, the features of which are (so unrealistic as to constitute) what one scholar calls an " artificial face"
(A)
(B) so unrealistic they constituted
(C) so unrealistic that they have constituted
(D) unrealistic enough so that they constitute
(E) unrealistic enough so as to constitute
Why C is wrong. I also don't know about the usage of "so....as to"
Who can help me wiht these?
c is wrong because the use of "have constituted". By that, tt seems the features have constituted ...and this action has been completed (i.e. the features don't constitute ...any more). If c is "so unrealistic that they constitute" then it's ok. But the subjects of "unrealistic" and "constitute" are the same ("features"), you can surely use the structure of "so..as to..".
renali: please spend some time reading all the posts on this board, you will find them quite helpful 'coz so many similiar and confusing questions have been answered quite well in earlier posts. Those posts helped me a lot, definitely
e.g.: You are so generous as to be unbelievable to some strangers.
ETS原题:
Climatic shifts are (so gradual as to be indistinguishable) at first from ordinary fluctuations in the weather.
(A) so gradual as to be indistinguishable[em11]
(B) so gradual they can be indistinguishable
(C) so gradual that they are unable to be distinguished
(D) gradual enough not to be distinguishable
(E) gradual enough so that one cannot distinguish them
2.so...(adj.)...as to ...(do sth.)[em26]
e.g.: She was so kind as to phone for a taxi for me. (OALECD第1440页原例.)
OG 88.
The Emperor Augustus, it appears, commissioned an idealized sculpture portrait, the features of which are (so unrealistic as to constitute) what one scholar calls an " artificial face"
(A) so unrealistic as to constitute[em11]
(B) so unrealistic they constituted
(C) so unrealistic that they have constituted
(D) unrealistic enough so that they constitute
(E) unrealistic enough so as to constitute
ETS例子：
OG 136.
Although schistosomiasis(血吸虫病, 后面的V.用单数) is not often fatal, it is (so debilitating that it has become an economic) drain on many developing countries.
(A) it is so debilitating that it has become an economic[em11]
(B) it is of such debilitation, it has become an economical
(C) so debilitating is it as to become an economic
(D) such is its debilitation, it becomes an economical
(E) there is so much debilitation that it has become an economical
