根据句意，用括号中所给词的正确形式填空，每空填一词。

1. The young man was charged with          (break) into several computers.

2. The radio says there will be much           (snow) next week.

3. Yang’s great           (achieve) in science go beyond what we have thought.

4. Scientists can’t explain           (appear) of dinosaurs correctly. They are trying their best to find the reason.

5. Are people who work till 10 o’clock in the evening more           (energy) than those who stop at 5 o’clock in the afternoon?

（）是世界上启发式教学的首倡者？

A.孟子

B.庄子

C.荀子

D.孔子