第一节语音知识（共5小题；每小题1分，满分5分）

1. watched          A. filled              B. combined   C. limited            D. practised

2. breath                A. mother             B. though            C. clothing          D. cloth

3. worth          A.world                B. horse           C. corner            D. force

4. glare                A.admire             B. stare                C. beard                D. fire

5. envelope         A.stomach           B. develop           C. poet               D. combine