(单选题)

How would the author feel about the findings of the study?

A.It is pioneering.

B.It is groundless.

C.It is imperfect.

D.It is uncommon.

参考答案：A

参考解析：

推理判断题。根据第四段中的“The research made discoveries that had never known before”可知，该研究的发现是前所未有的，故pioneering“开创性的，先驱的”符合题意。故选A。

知识点：阅读理解四选一英语专业基础知识阅读理解教师招聘-小学英语