依据《固体废物污染环境防治法》,国家实行工业固体废物( )。
A.名录管理制度
B.清洁生产制度
C.生产者负责制度
D.申报登记制度
参考答案:D
Tony said that he a good time in the park that day.[ ]
A. has
B. had
C. will have
D. is having
假如丈夫和妻子都是杂合子,他们生下二卵双生儿,这两个孪生子基因型相同的概率是()
A.1/16
B.1/4
C.3/8
D.1