单词辨音(共5小题；每小题1分，满分5分)
postcode

A．adopt

B．noble

C．observer

D．astronomy

charge

A．reward

B．appearance

C．target

D．forward

classify

A．procedure

B．concern

C．associate

D．correction

anxious

A．distinguish

B．lemon

C．brand

D．pond

motherland

A．breath

B．birthplace

C．southern

D．healthy