9. The ________ (发现) of radium has helped many people.　　　　　 　　　　　　　　　9____________

8. He is ________ (可能的) to come here tomorrow.　　　　　　　　 　　　　　　　　　8____________

7. No one knows the ________ (原因) of his sudden death.　　 　　　　　　　　　　　　　7____________

6.The________(重大突破) in fighting cancer gives hope to cancer patients all over the world.　 6____________

5. Don’t be frightened by the television camera. Just speak _____(自然的).　　　　　　　　 5____________

4. There are no _______ (钢琴) in the school for the poor children to play.　　　　　　　　 　4____________

3. Our government announced every citizen enjoy the freedom of ________ (宗教). 　　　　　3.____________

2. Don’t take a taxi; the bus can take you there more ________ (便宜).　 　　　　　　　　　2.____________

1.The snow-capped mountain and beautiful flowers are really a________ (享受，盛宴) for eyes. 1.____________

6. astronaut　 7. explanation　sidering　　 9.smoothly　 10.occupied