既能凉血止血，又能散瘀解毒消痈的药物是（）。
A.生地黄、牡丹皮
B.赤芍、紫草
C.金银花、连翘
D.大蓟、小蓟
E.侧柏叶、茜草
参考答案：D
It was _____ problem that _____ of the students could work it out [ ]
A. so hard a; a few
B. so hard a; few
C. such hard a; few
D. such a hard; a few
假如列表框（List1）有四个数据项，那么把数据项“China”添加到列表框的最后，应使用语句（）。
A、List1.AddItem 3, "China"
B、List1.AddItem "China", List1.List1Count-1
C、List1.AddItem "China", 3
D、List1.AddItem "China", List1.List1Count
