题型:填空题 选择填空。They don't have any rackets here. ______ of them can play tennis. [ ]A. Some B. Most C. All D. None 查看答案
题型:填空题 骨质疏松主要有3种检测方法,即___________、___________和___________。目前___________已成为诊断骨质疏松的最基本依据,它具有___________性,能检测各个局部骨骼,了解骨密度的变化。 查看答案