Why doesn' t Tom like his job?
A.He doesn't earn very much money.
B.He has to work too many hours.
C.He doesn' t have time for lunch.
D.He sometimes has to work in bad weather.
第3题
A.为人体老化过程在听觉器官中的表现
B.出现年龄与发展速度因人而异
C.发病机制与内淋巴积水有关
D.遗传因素对其发生发展有重要影响
E.与生命过程中遭受的各种有害因素影响有关
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