试题题干
In each of the following groups of words, there are four underlined letters or letter combinations marked A, B. C and D. Compare the underlined parts and identify the one that is different from the others in pronunciation.
参考答案
正确答案：
试题解析
本题考查u的发音。
duck：[dʌk]，duty：[ˈdjuːti]，dust：[dʌst]，dump：[dʌmp]。
ACD三项中u发/ʌ/，B项中u发/juː/，故选B。