Bruce ____ (prefer) playing football to playing basketball.

阅读理解

        Hilversum is a medium­sized city between the major cities of Amsterdam and Utrecht in the Gooi area of North Holland, the Netherlands. Unlike most of the Netherlands，Hilversum is actually in a hilly area with the soil mostly consisting of sand.Once called the Garden of Amsterdam，it still attracts travelers to come over to cycle and walk through the surrounding forests. They visit it for a relaxing day off from the urban madness.For Dutch people, Hilversum is all about textile(纺织) and media industries，and modern architecture.

        In history, Hilversum was largely an agricultural area.Daily life was marked by farming, sheep raising and wool production.A railway link to Amsterdam in 1874 attracted rich traders from Amsterdam to Hilversum.They built themselves large villas(别墅)in the wooded surroundings of the town.One of the families moving in was the Brenninkmeijers，currently the wealthiest family of the Netherlands.They moved in after big success in the textile industry and aided a substantial textile industry in Hilversum.But the textile boom lasted only several decades.The last factory closed in the 1960s.

        The change to a media economy started in 1920，when the Nederlandse Seintoestellen Fabriek(NSF) established a radio factory in Hilversum.Most radio stations settled in the large villas in the leafy areas of the town.Television gave another push to the local economy.Hilversum became the media capital of the Netherlands，and Dutch television stars moved into the leafy neighborhoods surrounding the town.

        In the early 1900s，modern architects W．M.Dudok and J．Duiker placed hundreds of remarkable buildings in Hilversum.These modern architectural masterpieces(杰作) are so many that Hilversum almost feels like an open air museum.Dudok alone shaped most of 20^th century Hilversum and approximately 75 buildings still bear his unique characteristies.His masterpiece.Hilversum Town Hall，was built in 1928­1931.It has wide international fame and is included in many architecture textbooks.The building has a remarkable shape and looks like a combination of “blocks”．Actually，one may start his journey of modern architecture by walking or biking the W．M.Dudok Architectural Route in Hilversum.

已知水稻的光效（光能利用效率）由一对基因（A、a）控制，抗病性由另一对基因（B、b）控制，两对基因独立遗传．高光效抗病水稻的育种方案如图1，请回答下列问题：

（1）水稻的低光效与高光效这对相对性状中，____ 是显性性状，而甲的基因型为____ ．

（2）假设辐射处理后得到一株水稻，检测突变基因转录出的mRNA，发现第二个密码子中的一个碱基发生替换，问该水稻的光能利用效率一定提高吗？____ 原因是____ ．

（3）若用乙培育高光效抗病水稻新品种，为了快速提高其在子代中的比例，应采用的育种方法是____ ，其所占比例为　____ 　．

（4）若图2为一株水稻（Aa）减数分裂过程中的一个细胞，同一条染色体两条姐妹染色单体的同一位点上的基因分别是A和a，造成这种结果可能的原因有____ ．

（5）若要使水稻的高光效基因在玉米植株中表达，从理论上讲常用的育种方法____ ，该方法依据的原理是____ ，该方法的优点是____