— It's raining hard and we can't go picn

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问题选择题

— It's raining hard and we can't go picnicking today.

— If only the weather _____ fine![ ]

A. is

B. were

C. had been

D. would be

答案

答案：B

单项选择题

J．Martin认为结构化设计和分析来提高数据处理生产率的做法收效甚微，因为哪些因素影响其效果　　Ⅰ．应用的微小变化，可能导致程序的系列变化　　Ⅱ．数据格式的不一致，导致数据共享性差　　Ⅲ．没用高级数据库语言，没有良好的数据库设计　　Ⅳ．企业的应用程序中存在着许多重复的逻辑结构

A．Ⅰ和Ⅳ

B．全部

C．Ⅱ和Ⅲ

D．Ⅲ

单项选择题

A．Two detectives investigating the case had tested positive for traces of radiation.

B．The ex-wife and the former mother-in-law of the spy were also poisoned.

C．The Russian businessman who met the former spy in London has fallen ill.

D．There is a high degree of probability that it is polonium that killed the spy.