52.I think we need to see an investment _________ before we make an expensive mistake.

　　A.guide 指南

　　B.entrepreneur 企業家

　　C.consultant 顧問

　　D.assessor 評估者 陪審法官

　　53.The ______ on this apartment expires in a years time.

　　A.treaty (國與國之間的)協約

　　B.lease 租約

　　C.engagement 約定(commitment 商業上的約定 承諾)

　　D.subsidy (政府資助的)津貼 補助金

　　54.The elderly Russians find it hard to live on their state ___________ .

　　A.pensions 養老金

　　B.earnings

　　C.salaries

　　D.donations 捐贈

　　charity 慈善

　　charity institution 慈善機構