进口动物病原体应该提前办理检疫审批手续。( )
参考答案：对
Enough sleep is good for health. If you for your favorite games, you will be exhausted the next day.
A. stay up B. show up C. give up
消化性溃疡发病的最主要病因是( )
A．饮食不节
B．遗传因素
C．免疫因素
D．Hp感染
E．胃酸分泌增高
