It is generally believed that teaching is ___ it is a science.
A.an art much as B.much an art as
C.as an art much as D.as much an art as
答案是哪个？
其他项怎么不对？谢！

It is generally believed that teaching is ___ it is a science.
A.an art much as B.much an art as
C.as an art much as D.as much an art as
这是一道高考题，有关形容词的比较级。在表示比较时有三种比较：
1）不同的人或物同一个方面：He is taller than I.
He is as tall as I. He is not as/so tall as I.
2)同一个人或物的不同方面比较：He is more shy than impolite.
He is not as hard-working as he is clever.(把他的聪明与勤奋比较，“他的勤奋劲比不上其聪明”，可译为“与其说……倒不如说”
He is as hardworking as he is clever.表示“他既聪明，又勤奋”。
not as much A as B表示“与其说是A倒不如说是B”。