单项选择题
The boy ______ .A bullet ______ through his chest on the left side. A.had died; passed B.died; had passed C.died; passed D.had died; had passed
单项选择题 被称为“君主之官”的是( ) A.心 B.肺 C.脾 D.肝 E.肾
单项选择题 “南戏”诞生于______。 A.杭州 B.嵊州 C.永嘉 D.金华
单项选择题 生理盐水的浓度为( ) A.9g/L B.0.9g/L C.9mmol/L D.9mol/L