He ________ to school last week.[ ]
A. go
B. went
C. goes
D. going
答案:B
感染人体的肠绦虫有多种,其中以人为终宿主的是()
A.短膜壳绦虫
B.长膜壳绦虫
C.猪肉绦虫
D.牛肉绦虫
E.阔节裂头绦虫
计算题:某高炉的焦炭批重为8t,其焦炭负荷为3.6t/t,问其矿石批重为多少?