29、By distinguishing himself as a judge in Arizona, Sandra Day O'Connor caught President Reagan's attention and was appointed the first woman justice on the Supreme Court.
答案为himself错,but why?我倒觉得这里的was appointed应该改为was appointed to
38、Observation of the Sun, Moon, and stars has enables humans to determine both the seasons and the time from day.
答案为from错,是不是要改为of?
40、The hardnessof mineral often gives a clue to its identity.