临床研究证明，自治疗第几小时起雷诺考特明显改善患者的鼻吸气流量峰值？（）
A.14h
B.17h
C.20h
D.23h
参考答案：B
钢丝绳绳芯的材料有（）、（）和（）等。
— What do you think of the TV Sitcom Home With Kids?
— It's very ____. Many children like watching it. [ ]
A. boring
B. funny
C. surprising
D. terrible
