内径152mm试筒适用于粒径不大于（）的土。
A.20mm
B.25mm
C.30mm
D.40mm
参考答案：D
辨证应属：
A．脾虚
B．肾虚
C．血瘀
D．气滞
E．以上都不是
Tomorrow will be the Youth Day . Will you the picnic in the boat on the west lake ?
A．take part in
B．join in
C．join
D．attend
