单词拼写(根据句意、首字母或中文提示用正确形式写出下列单词,

每空一词.提示:必须用必修五、选修六所学新单词.

1.His report was c__________(不断地) interrupted by applause.

2. Can you telephone me at your c_________ to arrange a meeting?

3. Destruction of the environment is one of the most serious ____________(挑战) we face.

4. Her father didn't a_____________ of her marriage to him, which made her very sad.

5. The teacher and his students are d_________ (高兴的)with the result of the experiment.

6. After some repeated a________, they finally succeeded in winning the competition.

7. Is now an a_________(适当的)time to call on Professor Simpson? ?

8. The washing machine is fully __________. (自动的)

9. The monitor gave a present to their headmaster on b_________ of all the students.                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           10. He was a_____________ as captain of the English team.

在一个三角形中，∠u=6v°，∠2=4f°∠3=______，这是______三角形．在一个直角三角形中，其中一个锐角是4f°，另一个锐角是______．