Choose the words which have the underlined part pronounced differently

2. Choose the words which have the underlined part pronounced differently (5points)
1.        A Japan             B. cat               C . hat             D. dance           
2.        A.first                 B.birthday     C.thirsty         D. fire
3.         A.March           B. school           C. teacher      D. beach
4.       A. music              B. student       C. study          D. srupid
5.       A. hear                B. tea                    B. team     D. dream