藻酸钾印模材料的贮存时间应不超过（）
A.3个月
B.6个月
C.9个月
D.12个月
E.24个月
参考答案：D
用适当的介词填空 。
1. There are two windows______ the wall.
2. The broom is______the door. I can't see it.
3. There is a dog______the tree. It can't get down.
4. Where is the photo______your family?
5. There are some big apples______the tree.
我国现存最早古的佛寺建筑是：南禅寺
