测速点相距200m,实测时间为5s,则列车速度为()。
A.120km/h
B.144km/h
C.40km/h
D.150km/h
参考答案:B
改错 (每题2分,共10分)
小题1:Mr. Green has a unhappy family. He lives happily with friends.
A B 注意时态和 C D
小题2:Thanks for your help, I finally passed the final exam.
A B C D
小题3:Zoosare very importantplace.
小题4:I have been to China for over 20 years.
小题5:I was very surprise to find hardly anyone there when I visited the zoo.
毕Ⅱ式胃大部切除术后,上腹剧烈疼痛,呕吐频繁、量少,不含胆汁。最可能的并发症是()。毕Ⅱ式胃大部切除术后,呕吐物含食物及大量胆汁。最可能的并发症是()。毕Ⅱ式胃大部切除术后,餐后呕吐大量不含食物的胆汁。最可能的并发症是()。
A.吻合口梗阻
B.输出袢梗阻
C.输入袢慢性不完全性梗阻
D.输入袢急性完全性梗阻
E.碱性反流性胃炎