在A、B、C、D四个选项中, 选出划线部分读音与其余三个不同的选项，并将该选项填入答题卷上相应的空格内。(本大题共10分，每小题1分)

A．age B．again C．grade D．radio

A．when B．very C．she D．help

A．tennis B．slim C．dinner D．cousin

A．office B．shop C．hero D．volleyball

A．use B．student C．usually D．under

A．room B．cook C．school D．food

A．each B．breakfast C．heavy D．head

A．borrow B．show C．know D．now

A．balls B．comics C．maps D．weeks

A．thank B．three C．those D．thirty