[单选题]Which word has a schwa sound?_____
选项:[bus, about, believe, wood][单选题]All English back vowels are rounded.
选项:[错, 对]
[单选题]Which word has a schwa sound?_____选项:[bus, wood, about, believe]
[单选题]All English back vowels are rounded.
选项:[对, 错]
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