下述哪项因素有利于创伤修复和伤口愈合
A．细菌感染B．血液循环不良C．异物存留D．局部制动E．服用皮质激素类药物
参考答案：A
The flower is dead. I ___ it more water.
A．will give
B．ought to give
C．could have given
D．ought to have given
疏浚工程的纵断面测点间距不应大于( )。
A．50m B．80mC．100m D．120m
