单项选择题
You design a SQL Server 2008 Reporting Services （SSRS） solution. You create a report by using Microsoft Visual Studio .NET 2008. The report contains the following components： A dataset named Customer that lists all active customers and their details. The dataset accepts no parameters. A dataset named SalesHistory that lists all sales transactions for a specified time period and accepts year and month as parameters. You need to ensure that a summary of sales transactions is displayed for each customer after the customer details. Which component should you add to the report？ （）
A. List
B. Table
C. Matrix
D. Subreport
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多项选择题
YoudesignaBusinessIntelligence（BI）solutionbyusingSQLServer2008.YouplantocreateaSQLServer2008ReportingServices（SSRS）solutionthatcontainsfivesalesdashboardreports.Usersmustbeabletomanipulatethereports’parameterstoanalyzedata.Youneedtoensurethatthefollowingrequirementsaremet：Userscanmanipulatetheparametersfordataanalysisinasingletriptothedatasource.Reportsareautomaticallyrenderedassoonastheyareaccessedforthefirsttime.Whichtwotasksshouldyouperform？（）
A. Filter data by using expressions.
B. Specify the default values for each parameter.
C. Create an available values list for each parameter.
D. Create report parameters by using query parameters to filter data at the data source.
