单项选择题 所谓“三高一低”膳食模式，是以动物性食物为主，膳食提供( )。 A．高糖 B．高膳食纤维 C．低脂肪 D．高蛋白

单项选择题 极重度聋指的是( ) A．平均听阈26～40dB B．平均听阈41～55dB C．平均听阈56～70dB D．平均听阈71～90dB E．平均听阈91dB以上

单项选择题 ______ when he began to dream ______ far-away lands. A．Hardly did he fall asleep; for B．No sooner had he fallen asleep; for C．Hardly had he fallen asleep; of D．No sooner did he fall asleep; of