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
参考答案:A, C, D
Airplanes that used to take more than half a day to cross the Atlantic are now _____ to make it in
several hours.[ ]
A. faster than
B. fast enough
C. so fast
D. faster
冶炼二公司电解车间电解单槽阳极板为()块,电解单槽阴极板为()块。