public class InterfaceDemo implements A,B{ @Override public void f（）{ // TODO Auto-generated method stub }}interface A{ void f（）throws IOException;}interface B{ void f（）throws ClassNotFoundException;}
A. 什么都不写
B. throws IOException
C. throws ClassNotFoundException
D. throws IOException,ClassNotFoundException
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Dealing with a customer’s complaints, you should___（）
A. repeat back what you are hearing to show that you have listened
B. keep on asking questions to dig out the truth
C. always stand on your company to defend its benefits
D. be very serious towards your customer
Any remarks that you make in a research article should be supported with evidence. The evidence may NOT include____（）
A. experiment results
B. quotations from previous literature
C. hearsay
D. statistics
Writing a research paper involves__（）
A. choosing a topicchoosing a topic
B. researching on your topic
C. doing the actual writing
D. all of the above
Which of the following sources is the most reliable（）
A. News report
B. Journal article
C. Wikipedia entry
D. Blog
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