Nineteenth-century art critics judged art by the realism of its method of representation. It was assumed that the realistic method developed from primitive beginnings to the perfection of formal realism. It is one of the permanent gains of the aesthetic revolution of the twentieth century that we are rid of this type of aesthetics.
It can be inferred from the passage above that the artistic revolution of the twentieth century had which of the following effects

A．It deemphasized realistic representation as an evaluative consideration for judging works of art.

B．It permitted modern critics to appreciate the simplicity of primitive art.

C．It repudiated the realistic representation found in the art of the past.

D．It reinforced traditional ways of looking at and judging great art.

E．(E) It allowed art critics to understand the evolution and nature of art.

关于B-DNA双螺旋结构的叙述错误的是（）

A.戊糖磷酸在螺旋外侧、碱基在内侧

B.通过碱基之间的氢键维系稳定

C.每个螺旋为10个碱基对

D.遵循碱基互补规则，但有摆动现象

E.双螺旋的两条链是反向平行的