In each of the following groups of words, there are four underli

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. Mark your answer by blackening the corresponding letter on the Answer Sheet.
A、use[less]
B、end[less]
C、un[less]
D、hope[less]
【正确答案】：C
【名师解析】:在这个问题中，我们需要比较四个选项中的划线部分，找出发音与其他不同的一个。选项A中的“useless”中的“less”发音为/ləs/，选项B中的“endless”中的“less”同样发音为/ləs/，选项D中的“hopeless”中的“less”也是/ləs/。然而，选项C中的“unless”中的“less”发音为/lis/，与其他三个选项的发音不同。因此，正确答案是C。