速查！2020年大连理工大学硕士研究生考试初试成绩出来了

血清白蛋白（pI为4.7）在下列哪种pH溶液中带正电荷

A. pH4.0
B. pH5.0
C. pH6.0
D. pH7.0

In World War II the factory was heavily bombed and rebuilt afierwards.Bankruptcy forced the factory to close its doors in 1980.After years of 1,large parts of the factory had become ruined and run 2,An unsafe,abandoned place,with widespread vandalism the factory soon 3 into a source of nuisance to the local 4.The project aims to reconvert the old textile factory into a city park.This reconversion is part of a mixed-use development urban renewal project 5 by Sogent,the urban development company of Ghent.Surrounded,as it is,by a 6 0f functions and users,the park is under a lot of outside pressure.The aim was to create a diversified park which could 7 this pressure and stimulate a 8 community life for the neighbourhood.The design briefproved a simultaneous exercise in creating a site with plenty of flow,9 preserving walls and constructions and maintaining a l0,workable zoning of the park's functions.The orthogonal plan ofthe old textile factory is 11 as a basic template for a zoning ofthe park.New,organic green spaces and a paths network 12 with what remains ofthis underlying structure.By preserving some historical marks,the park becomes an"architectural 13".On another level,the integration of portraits of former employees in the factory（central gangway）,14 a social dimension to the historical one already present in the park's design.On the whole,new meaning and new life are 15 by the bringing together of past and present.The walls and structures become the historical placemat for the development of new activities.16 the diversified park was 17 there has been a revival of activity in the neighbourhood.The reconversion has positive 18 0n the buildings and quarters around the park.Thanks to the public participation sessions,locals have felt very 19 with the project.The park is now being used 20 across the generations（senior citizens,families,children）,becoming,much like it used to be,the meeting place for the neighbourhood.5选？

A.distributed
B.commissioned
C.trusted
D.obliged

美国国会众议院 2017 年 11 月 6 日投票通过减税法案，迈出了美国 30 年来最大规模减税计划的第一步。 美国企业和多数家庭税负将有所降低， 但同时联邦财政赤字将大幅攀升。 当天共和党控制的众议院以 227 票赞成， 205 票反对的结果，通过了《减税和就业法案》 。按照这份法案， 联邦企业所得税将从目前的 35%大幅降至 20%。同时， 联邦个人所得税率也将从七档简化为四档， 多数家庭将获得减税。 这是美国自 1986 年以来最大规模的减税法案。试分析，如果最终该方案实施，可能会对中美的汇率产生何种影响？