19．We'd better discuss everything ________ before we work out the plan.

　　A．in detail       B．in general

　　C．on purpose      D．on time

　　答案　A

　　解析　句意为：在我们制定计划之前，我们最好详细地讨论每件事。in detail详细地；in general通常，大体上；on purpose故意地；on time准时，按时。由句意知选A项。

　　20．The two things are the same in outward form but different________.

　　A．in addition      B．in brief

　　C．in common      D．in essence

　　答案　D

　　解析　考查介词短语词义辨析。in essence本质上，符合句意。in addition此外；in brief简短地，简言之；in common共同。

　　21．Mr. Columbus was always ready to help others.________，he was liked by everyone.

　　A．In conclusion     B．In return

　　C．In turn       D．In particular

　　答案　B

　　解析　in return作为回报，作为报答。句意为：Columbus先生总是乐于助人，作为回报，大家都喜欢他。in conclusion 最后；in turn轮流；in particular尤其。

　　22．Johnson was to blame for the incident. But ________ his positive attitude，we forgave him because "Every man has his faults."

　　A．in view of      B．in search of

　　C．for fear of      D．in exchange for

　　答案　A

　　解析　句意为：Johnson应为事故负责，但鉴于他态度不错，我们原谅了他，因为人人都有缺点。in view of鉴于，考虑到，符合句意。

　　23．She was told to wear flat shoes ________ her back problem.

　　A．on account of     B．regardless of

　　C．in terms of      D．in case of

　　答案　A

　　解析　句意为：因为她背部有问题，她被要求穿平底鞋。on account of表示"因为，由于"，符合句意。

　　24．At the railway station，he waved goodbye to his friend until the train was ________.

　　A．out of sight

　　B．out of reach

　　C．out of order

　　D．out of place

　　答案　A

　　解析　句意为：在火车站，他挥手同他的朋友告别直到火车看不见了。out of sight看不见，符合题意。

　　25．While in London，we paid a visit to the hospital founded ________ Florence Nightingale.

　　A．in honor of      B．in line with

　　C．in favor of      D．in place of

　　答案　A

　　解析　句意为：我们在伦敦时，参观了为纪念弗罗伦斯·南丁格尔而建的医院。in honor of为纪念……，符合题意。