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在关系模型的完整性约束中，实体完整性规则是指关系中 (2) 参照完整性规则要求 (3) 。（3）处填（）。

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Questions 8 to 10 are based on the following conversation. At the end of the conversation, you will be given" 15 seconds to answer the questions. Now listen to the conversation. Which of the following is NOT mentioned as a difficulty for a nurse

A. Hard work.
B. Night duty.
Change in work shift.
D. Cooperation with doctors.

阅读以下说明和Jrdva代码，将应填入 (n) 处的字句写在对应栏内。[说明]在销售系统中常常需要打印销售票据，有时需要在一般的票据基础上打印脚注。这样就需要动态地添加一些额外的职责。如下展示了Decorator(修饰)模式。SalesOrder对象使用一个SalesTicket对象打印销售票据。图6-1显示了各个类间的关系。以下是Java语言实现，能够正确编译通过。[图6-1][Java代码]//Component.java文件public (1) class Component {abstract publ ic void prtTicket()；}//salesTicket.java文件public class SalesTicket extends Component{public void prtTicket(){//Sales ticket printing code hereSystem.out.printin("SalesTicket")；}}//Decorator.java文件publ ic abstract class Decorator extends Component{public void prtTicket(){if(myComp!=null)myComp.prtTicket()；}private (2) myComp；public Decorator(Component myC){myComp=myC；}}//Footer.java文件public class Footer extends Decorator {public Footer(Component myC){(3) ；}public void prtTicket(){(4) ；prtFooter()；}publ ic void prtFooter(){//place printing footer code hereSystem.out.println("Footer")；}}//salesorder.java文件public class SalesOrder{void prtTicket(){Component myST；myST=new Footer( (5) )；//Print Ticket with footers as neededmyST.prtTicket()；}} （3）处填（）。

简论清末礼法之争。

Questions 27 to 29 are based on the following news. At the end of the news item, you will be given 15 seconds to answer the questions. Now listen to the news. Who says the trial will begin in Kuala Lumpur on November 2nd

A. The Deputy Prime Minister.
B. Mr. Anwar.
C. A VOA reporter.
D. The High Court judge.