常用来弥补耐火砖砌筑不足之处的材料是（）
A.水玻璃
B.玻璃纤维
C.硅酸盐水泥
D.不定型耐火材料
参考答案：D
I don't think you should mention it at the beginning of the story, or it may ____ the shocking ending. [ ]
A. give out
B. give away
C. give up
D. give off
既清热凉血，又活血的药物是（）
A.地黄
B.牡丹皮
C.玄参
D.赤芍
E.紫草
