不同方向的斜层理相互交替的层理,称为()。
A、波状层理
B、水平层理
C、斜层理
D、交错层理
参考答案:D
________advertisements,TV programs are often made boring.[ ]
A. Regularly interrupted by
B. Regularly interrupting
C. To regularly interrupt
D. To be regularly interrupted by
厌氧芽胞菌属包括()
A.肉毒杆菌
B.炭疽芽孢杆菌
C.破伤风杆菌
D.产气荚膜梭菌
E.艰难梭菌