答案：B

题目分析：句意：观众屏住呼吸要看看谁能够赢这块金牌。take a deep breath深呼吸；hold one’s breath屏住呼吸; lose one’s breath呼吸短促；out of breath上气不接下气。根据句意故选B。

点评：本题难度适中。动词短语辨析是近几年高考的热点，需要考生平时加强背诵短语的意义及用法，命题者还考查学生对语境的理解。这里考查含有breath与不同的动词构成的短语。

即学即练：He ______and dived into the water.

A. took a deep breath              B. held their breath

C. lost their breath               D. was out of breath

解析：A。句意：他深深吸了口气，然后跳进水里。