肾损伤后提示应紧急手术的症状是（）
A.明显血尿
B.严重休克不能纠正
C.疼痛难以忍受
D.合并前臂骨折
E.高热
参考答案：B
在其他因素一定的条件下，边际贡献率与应收账款占用资金成反比。( )
In winter, the weather of Moscow is ______ colder than _______of Beijing.
A．more; that
B．much; that
C．even; it
D．much; it
