问题补充：
---- It is generally believed that teaching is it is a science.
A. an art much as
B. much as an art as
C. as an art much as
D. as much an art as
答案：
A. an art much as
B. much as an art as
C. as an art much as
(答案→)D. as much an art as
解析：考查固定搭配：句意“一般都相信教学是一门科学同样也是一门艺术”。as…..as为固定结构，意“和…同样”， as后应紧接形容词或副词原形，如果有名词，名词应在形容词之后， 选D。
