将下列单词"oo"发音的不同分成两类.foot.noodle.boots.moon.room.book.cook.cook.classroom.A:B:

问题描述:

将下列单词"oo"发音的不同分成两类.foot.noodle.boots.moon.room.book.cook.cook.classroom.
A:B:

A 、发短音【u】的有foot ,book,cook,classroom
B、发长音【u:】的有noodle,boots,moon,room

我查了一下牛津词典,可分为三类:
A:发短音【u】的有foot ,book,cook
B:发长音【u:】的有noodle,boots,moon
C:发长短音均可的有room,classroom