That's a nice sweater. Is it ____ of cotton?[ ]
A. make
B. making
C. made
D. makes
答案:C
在脑桥上、中部之间横断脑干并同时切断双侧颈迷走神经,动物将出现
A.长吸式呼吸B.喘息样呼吸C.陈-施呼吸D.比奥呼吸
慢性心脏病患者心力衰竭的最常见诱因是()
A.劳累
B.肺部感染
C.电解质紊乱
D.妊娠
E.心律失常