You ______ talk so loud in the library.
A. needn't
B. may not
C. mustn't
查看答案
Then the young man came back because ______.
A. he got off at the wrong station
B. he found he had left his bags on the train
C. he thought he had left something on the train
In the story, the train was wrong.
A. Right.
B. Wrong.
C. Doesn't say.
信息系统开发方法其指导思想、开发策略常常相同或相似于( )。
A. 目标分析
B. 环境分析
C. 效益分析
D. 业务分析
When the rude young man reached his station, ______.
A. the other five passengers helped him to get off the train
B. the other five passengers didn't help him with his two heavy bags
C. he forgot to get off the train
微信支付 
支付宝支付