申論題

II. 單字填空 (15%) Part A: 請依句意選出最佳選項並依照題意、文法進行適當修改。請直接於下列答案區作答，未寫在答案欄 中不予計分。

4. Scientists claimed that the possible reason why a tsunami not only 1)________ at high speeds, but also travels great distances with limited energy loss is that the rate at which a wave loses its energy is 2)________ related to its wave length.