Directions: In each of the following group of words, there is one underlined part with a different sound. You are required to pick it out.

(单选题)—Mum, it’s nice weather. I want to skate this afternoon.—Don (单选题)______ a moment and I will go to your rescue. (单选题)There was ______ between the police and the public in catchi (单选题)Taking a close look at their respective historical contexts, (单选题)Our city has experienced ______ this year as it did last yea (单选题)—What do you think of French?—In my opinion, French is _____ (单选题)—Jack, you erase the blackboard today, ______?—But I did it (单选题)It is ______ for him to get to school on time, because it is (单选题)Standing on the top of the Oriental Pearl TV Tower, ______ a (单选题)Large amounts of water ______ in the past five years.