It’s clear that a hard working student has a great interest in science.
A. 不填; discovered
B. 不填; developed
C. that; invented
D. that; developed
网友回答
A. 不填; discovered
(答案→)B. 不填; developed
C. that; invented
D. that; developed
解析： It is clear that+从句是固定的句型，所以第一个空不用填任何词。Develop 表列：“发展”；discover表示“发现”；invent表示“发明”，只有develop符合题意。