找出划线部分发音不同的选项。⑴{#blank#}1{#/blank#} A．knowledge B．down C．town D．how
⑵{#blank#}2{#/blank#} A．blue B．ruler C．true D．busy
⑶{#blank#}3{#/blank#} A．music B．June C．student D．pupil
⑷{#blank#}4{#/blank#} A．sugar B．cut C．just D．hunt
⑸{#blank#}5{#/blank#} A．card B．star C．warm D．party
