问题补充：
John is much shorter than his sister, but he jumpsshe does.
A. as good as
B. as best as
C. as high as
D. as higher as
答案：
A. as good as
B. as best as
(答案→)C. as high as
D. as higher as
解析：本题的含义是约翰比他的妹妹还要矮，但他跳的和他的妹妹一样高，high表示高的意思，as……as之间的形容词用原级，故本题选C。
