Both are correct! It could be 'a spirit' or 'the spirit' . 'a spirit' would refer to a general enthusiastic and determined attitude of creativity and scientific skill ,while 'the spirit' is specifically referring to the attitude of them as a group.

The first missing article should be 'the' because it refers to a specific spirit of creativity and a specific scientific skill (the ones that have made Zhongguancun a success) Therefore the answer is A) the ; a

a; a There is more than one spirit of creativity, since it is defined differently in different situations. It depends on the preceding sentences. If the spirit of creativity in Zhongguancun has already been mentioned, then you must use "the". If, on the other hand, it is the first time, then you use "a".

Companies in Zhonguancun all have their characteristics, but they all share the spirit of creativity and scientific skill that have made Zhongguancun a success.

IMO.. use "the" if the spirit is clear and specific. use "a" if the spirit is not clearly defined. Fighting!!