What enables some people to get big creative breakthroughs while

What enables some people to get big creative breakthroughs while others only get small and?non-creative breakdowns,blaming themselves and society?Are some people“gifted”?Are there?other factors?21?work—factors that we have more control over than we think? While nobody can deny the?22?that some people seem to be blessed with particular?creativity,research shows that anyone can?23?their chances of coming up with new and original?ideas?24?they would only engage themselves more in the process of?25．It′s the old Thomas?Edison thing about“discovery?26?99 percent perspiration(汗水)and 1 percent inspiration．”27,the studies prove this:great creative breakthroughs usually happen only?28?intense?periods of struggle．It is sustained effort towards a specific goal?29?eventually prepares for great?creative insights． This kind of sustained effort does not always?30?immediate results,a fact that not only?separates the innovators(革新者)from non-innovators,but?31?leads some people to conclude?that it is just not?32?for them．“Maybe I should have gone to medical school like my mother?wanted,”they wonder when the breakthrough is?33?to be found．Alas,one forgets during their?inevitable encounters?34?self-doubt,that the big surprise is never?35．Indeed,it can happen?at any time and place． 第29题的答案是（ ）
A、that
B、who
C、what
D、as
【正确答案】：A
【题目解析】：答案解析：在第29题中，句子结构表明需要一个引导词来引导一个定语从句，修饰前面的名词“sustained effort”。在定语从句中，“prepares”是谓语动词，其前面需要一个主语，而“that”可以在定语从句中作主语，指代前面的“sustained effort”，表示“正是这种持续的努力”。因此，“that”是正确的选择，选项A符合语法和句意。