失去爆破，是指当一个爆破音后面紧跟一个爆破音、摩擦音、破擦音、鼻辅音、舌边音时，前一个爆破音：____（）
A. B. 气流不冲破阻碍，但稍作停顿
B. A. 不发音
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Which one is NOT a disaster（）
A. D. death toll
B. A. tsunami
C. B. typhoon
D. C. volcanic eruption
Session “5.7 Speaking Skills-Further Discussion” talks about（）
A. how to make the modern life easier
B. how to save and protect water resource
I’m feeling a little depressed at the moment, but I’m sure good times are ______（）
A. B. at the corner
B. D. on the corner
C. around the corner
D. A. in the corner
Which of following is not about the central idea of Text A of Unit 5（）
A. Water is important resource
B. C. Agriculture needs water for irrigation
C. D. Conserve water first. Then, follow it up with new solutions
D. B. Getting water right is the great challenge
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