单词拼写.

1. How could you t________________ his rude behavior for such a long time?

2. S________________ by trees, the lake looks beautiful and peaceful.

3. He would like to buy some local s________________ wherever he travels.

4. Yesterday a famous professor made a speech, strongly o_______ further research into gene-therapy.

5. After hard training, their performance in track and field was greatly e_________________.

6. Jim went to put up the tent. ________________(同时) Peter started to prepare supper.

7. The latest ________________(统计) prove that the epidemic has been under control.

8. This is the ________________(原始的) photo without being edited.

9. Lack of communication may cause serious _________(冲突) between bosses and employees.

10. I am in a ________________(进退两难的境地) over whether to tell him the truth or not.

已知某玻璃对蓝光的折射率比对红光的折射率大，则两种光( )。

A．在该玻璃中传播时，蓝光的速度较大
B．以相同的入射角从空气斜射入该玻璃中，蓝光折射角较大
C．从该玻璃中射入空气发生反射时，红光临界角较大
D．用同一装置进行双缝干涉实验，蓝光的相邻条纹间距较大