国家鼓励利用无毒无害的固体废物生产建筑材料，鼓励使用（）。
A.预拌混凝土
B.散装水泥
C.预拌砂浆
D.袋装水泥
参考答案：B
---I won the first prize in the talent contest!
--- !
A．Have good luck
B．Congratulation
C．Good for you
D．Best wishes
Chinese people think a lot about food. In fact, I think that they are sometimes _____ with it.
A．modest
B．conventional
C．abundant
D．obsessed
