单项选择题 In each of the following groups of words，there is one underlined part with a different sound.You are required to pick it out（）

单项选择题 In each of the following groups of words，there is one underlined part with a different sound.You are required to pick it out（）

单项选择题 In each of the following groups of words，there is one underlined part with a different sound.You are required to pick it out（）