问题补充：
Which of the following underlined parts is different in pronunciation from the others?
A. Please focus your attention on your papers, boys and girls.
B. She likes to show off her new clothes in front of her friends.
C. I think she should improve her learning methods.
D. The boy picked a hole in his new sweater.
答案：
A. Please focus your attention on your papers, boys and girls.
B. She likes to show off her new clothes in front of her friends.
(答案→)C. I think she should improve her learning methods.
D. The boy picked a hole in his new sweater.
解析：句意：下列划线部分哪一个在发音上与其它的不同？此题属于辨音。根据四个单词的读音（其实跟句子没有关系），过“音标关”的最佳方法是先复习和熟悉44个音标，然后在默写或背诵时注意“读准”单词，不会读马上查词典（也可以用电子字典等），养成习惯，定能做好。本题选C。
