be not...but(V)...???

not...but...的平行是这样的 么？

be not...but(V)...???    这还平行么……

73。 Evolutionary psychology holds that the human mind is not a
"blank slate," but instead that it comprises specialized mental
mechanisms that were developed as a way of solving specific problems human
ancestors faced millions of years ago.

(A) the human mind is not a "blank
slate," but instead that it comprises specialized mental mechanisms that
were developed as a way of solving

(B) the human mind is not a "blank
slate" but instead comprises specialized mental mechanisms that were
developed to solve

(C) the human mind, instead of a
"blank slate," it comprises specialized mental mechanisms that have
been developed to solve

(D) rather than it being a "blank
slate," the human mind comprises specialized mental mechanisms that have
been developed as a way of solving

(E) rather than the human mind's being a
"blank slate," that it comprises specialized mental mechanisms that
were developed as a way of solving

(B) 正确， the
human mind is not a "blank slate" but instead comprises…结构平衡；
        用developed
to solve表达目的，简洁
            

※句子结构:
…holds that the human mind is not a…。but instead comprises…

76。 By recording the noise of crinkled wrappers as they were slowly
stretched out in an otherwise silent chamber, and then digitizing and
analyzing the sound emissions on computers, a team of scientists found the
noise not continuous but consisted of individual bursts or pops just
thousandths of a second long.

(A) digitizing and analyzing the sound
emissions on computers, a team of scientists found the noise not

(B) digitizing and analyzing the sound
emissions on computers, a team of scientists found that the noise was not

(C) digitizing and analyzing the sound
emissions on computers, a team of scientists found the noise not to be

(D) the sound emissions were digitized and
analyzed on computers, a team of scientists found that the noise was not

(E) the sound emissions were digitized and
analyzed on computers, a team of scientists found the noise not to be

(B) 正确， By recording…， and then digitizing and analyzing结构平衡；
        使用found that子句更能够清楚完整的表达found的内容
        

※句子结构: By recording…， and then digitizing and analyzing…， a team… found that the noise was not…but consisted of…
        

从常识来讲，很少看到在 be前面加not吧～

so...希望回答了楼主的问题～