生活垃圾填埋库区的占地面积不得小于总面积的()。
A.50%
B.60%
C.70%
D.80%
参考答案:B
九孔螺是指______。
A.海螺
B.蜗牛
C.鲍鱼
D.花螺
—Did the radio say ________?
—Yes, from Hunan.
A.how the bad rice came
B.where the bad rice came from
C.how did the bad rice come
D.where did the bad rice come from