请问NN们 ..., it appears, ...在句中的作用

ItalyPirlo

The Emperor Augustus, it appears, commissioned anidealized sculpture portrait, the features of which are so unrealistic as toconstitute what one scholar calls an "artificial face."

(A)so unrealistic as to constitute

(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

The verbs are and calls indicate thatthe sculpture is being viewed and judged in the present. Thus, neither the pasttense verb constituted (in B) nor the present perfect verb haveconstituted (in C) is correct; both suggest that the statue's featuresonce constituted an artificial face but no longer do so. Also, Bwould be better if that were inserted after so unrealistic,although the omission of that is not ungrammatical. ChoicesD and E use unidiomatic constructions with enough: unrealistic enough toconstitute would be idiomatic, but the use of enough isimprecise and awkward in this context. Choice A, which uses the clear, concise,and idiomatic construction so unrealistic as to constitute, isbest.
答案是A没任何问题，只想问这个it appears在句子中是插入语还是 it appears that the Emperor Augustus commissioned ....强调句的变体，是强调句的话能这么变体吗？

ItalyPirlo

thanks

haoyuejayer

是插入语，不强调。LZ不要去纠结这些了，这些在语法中不重要，。