语音知识（共5小题；每小题1分，满分5分）

1. worked        A. learned     B. studied         C noticed        D. occurred

2. bank      A. uncle       B. condition          C. wonder         D. continent

3.satisfy     A. affair       B. ache        C. alarm        D. absence

4.hear       A. nearly      B. search        C. bear          D. heart

5. biology    A. cover      B. official                   C. concert       D. tomb