人体正常肠道丛中占90%以上的是:
A. 大肠杆菌
B. 无芽胞厌氧菌
C. 白色念球菌
D. 葡萄球菌
E. 产气杆菌
Nick is a newcomer, so we offer to show him ______________.
A. make
B. around
C. introduce
D. experienced
I'm so glad to have this ______________ to work here.
A. opportunity
B. experienced
C. make
D. introduce