【单选题】---- Would you like to go travelling with me to New York, Benjamin? ---- Sorry, I’m busy, for the final examination is coming. So I ____________ hard throughout the next several weeks.
【简答题】__________ [A] maintenance [B] protection [C] care [D] attention
【简答题】A.Pottery and car maintenance. B.Car maintenance and Spanish conversation. C.Folk guitar and Spanish conversation D.Spanish conversation and keep-fit.
【简答题】[A] management [B] maintenance [C] conservation [D] protection
【单选题】实验室诊断猪布鲁菌病,常用的血清学方法是
【简答题】砷盐的检查中导气管中填充的醋酸铅棉花起什么作用?