问题补充：
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：
A. an art much as
B. much an art as
C. as an art much as
(答案→)D. as much an art as
解析：本题可从考查形容词的同级比较点入手。在同级比较as…as句式中，如果as后面的形容词作定语且其所修饰的名词前有不定冠词时，该冠词须置于形容词之后，即形成“as + 形容词 + a / an + 单数可数名词 + as”结构。这道题在名词专题中也有解析，不同的是观察视角不同，应注意培养发散思维。
