题目

— Xiao Shen-yang is so popular        us. — Yeah, he is one of my favorite pop stars. A． for              B． to                C．with               D．on 答案：C15．设a=40.6，b=80.34，c=（${\frac{1}{2}}$）-0.9，则a，b，c的大小关系为（　　）A．a＞b＞cB．b＞a＞cC．c＞a＞bD．c＞b＞a