某游轮从甲地到乙地用了5小时,回来时因为顺风用了4小时,返回时的速度比去时快百分之几( )
A.10%
B.20%
C.25%
D.40%
参考答案:C
解析: [*]
_____ a new library_____ in our school last year?[ ]
A. Is; built
B. Was; built
C. Does; build
D. did, build
血液流出血管或心脏外称为出血。