单项选择题
Traffic reaches its rush hour between 8:00 and 9:00 in the morning.（）
A. border B. goal C. level D. peak
单项选择题 The performance was pretty impressive.（）
单项选择题 “There is no other choice,” she said in a harsh voice.（）
单项选择题 This was an unexceptionally brutal attack.（）
