瞿麦除利尿通淋外，又能（）。
A.通气下乳
B.清肺止咳
C.润肠通便
D.杀虫止痒
E.破血通络
参考答案：E
能促进大肠传导作用的是（）
A.胃气的降浊
B.肺气的肃降
C.小肠泌别清浊
D.脾之运化
E.肾的温化
—______ the population of the U.S.A. in 2005?
—It ______ about 296 million. [ ]
A. What is; is
B. What was; was
C. How many was; is
