I don't see it in the answers, but it seems to me that the correct answer should be: "as much of AN art as" but I think you can also say " as much an art as" I believe I usually would say "as much of an art as"... but now that I think about it, I'm not sure which one is most proper. I think dropping the "an" *might* be ok, but the first sounds more clear and correct: "is as much of an art as". Here are some more examples of proper English: Swimming is "as good of AN exercise as" running. Apples are "as good of a fruit as" oranges. "This is as good as that." B is "as good of an answer as" D btw, how do you make these kind of comparisons in Mandarin Chinese?

You're right. 那应该是标准答案，文法看似没错。 (B & D look the same...) If you want to use "as much as"...... It is generally believed that teaching is like an art as much as it is like a science. 意思很怪。但as much as在这是表示程度，没有be+名词接as much as的，大都是be+形容词+as much as，不然就是主词＋动词（＋副词修饰）+as much as＋Sb＋动词。 或者。If we put "an art" in the front... It is generally believed that teaching is an art as it is a science. 我们通常相信教导是一门艺术，就像它是科学一样。 解释勉强。