A book and two pencils, ______________. [ ]
A. sorry
B. please
C. pardon
答案:B
Jim ________ breakfast at home every day.[ ]
A. isn't
B. doesn't
C. doesn't have
属于革兰阳性细菌脓毒血症的致病菌是()
A.金黄色葡萄球菌
B.白色念珠菌
C.链球菌
D.大肠埃希菌
E.变形杆菌