CT表现为极低密度，MIRT1、T2表现为极低信号的是下列哪项（）
A.脓液
B.肌腱
C.钙化
D.肝脏
E.气体
参考答案：E
区分字，再组词。
咏( ) 妆( ) 裁( )
泳( ) 壮( ) 栽( )
English is a language shared by several diverse cultures ,each of _______________uses it somewhat differently
A which
B what
C them
D those,
