批量伤员进行检伤分类的目的是（）。
A.明确伤情
B.明确伤类
C.明确伤型
D.确定救治及后送次序
E.便于分级救治
参考答案：D
His idea of having weekly family meal together, which seemed difficult at first，has many good changes in their lives．
A．got through
B．resulted from
C．turned into
D．brought about
心尖四腔观常显示正常房间隔回声失落，这是因为（）
A.房间隔与声束平行
B.房间隔与声束垂直
C.超声仪器的分辨力不够
D.卵圆孔房间隔菲薄并与声束平行
E.以上都有可能
