腹部闭合性损伤患者，最有诊断价值的体征是（）。
A.肠鸣音减弱
B.腹膜刺激征
C.肠鸣音增强
D.腹部压痛
E.恶心、呕吐
参考答案：B
After this accident we are ______ concerned with the safety of travelling by high-speed rail. [ ]
A. little
B. less
C. much
D. more
寒痰湿浊引起的咳嗽特点是（）
A.咳声不扬
B.咳声清脆
C.咳声如犬吠
D.咳声低微
E.咳声重浊沉闷
