产生外毒素的细菌有()
A.产气荚膜梭菌
B.肉毒梭菌
C.白喉棒状杆菌
D.产毒型大肠埃希菌
E.鼠疫耶尔森菌
参考答案:A, B, C, D, E
The number of people in the world ________ about 6 billion and large quantities of waste ________ each year.[ ]
A.totals; has been produced
B.totals; is produced
C.totals; are produced
D.total; are being produced
(2010)住房公积金管理的决策机构是()。
A.住房公积金管理中心
B.住房公积金管理委员会
C.金融主管部门
D.财政主管部门