Since the beginning of history, people   34    to know more about the sky. Thousands of years ago, people would look up into the sky, and then named different stars based on their places in the sky or the shapes the stars made up .At that time, People even   35    stars as signs of a new season or for directions. 
         In the modern times, we 36 much more about the sky than people used to. We now   37     knowledge of the sun, our own planet and the others. Early in 2016, the finding of “gravitational waves” brought a new beginning to our study of the sky.
         Albert Einstein, one of the greatest scientists of all time first   38    about the idea of gravitational waves in his research in 1915. He believed that when two black holes came together, they created gravitational waves. However, the technology at his time wasn’t good enough to test his idea. Because people’s eyes can’t see these waves, scientists made a tool to catch them in 1992. Finally in February 2016, scientists caught the gravitational waves and proved Albert Einstein was again right.
*prove (v.) 證明
【題組】34.
(A) never tried
(B) will want
(C) have tried
(D) have never wanted