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问题 单项选择题

下列测试不是系统测试用户层关注的是______。

A) 数据安全性测试
B) 可维护性测试
C) 并发性能测试
D) 可操作性测试

答案

参考答案：C

解析： 对系统测试分析时，通常从用户层、应用层、子系统层、协议等几个层次入手。因为用户层面向的最终使用者是用户，因此用户层的测试主要围绕着用户界面的规范性、友好性、可操作性、系统对用户的支持，以及数据的安全性等方面展开。另外，用户层的测试通常还应注意可维护性测试和安全性测试。选项C并发性能测试属于应用层测试所关注的。

阅读理解

阅读理解，并回答问题。

Dear John,

       Thank you very much for your letter. I am glad that you enjoyed your holiday with me. We enjoyed

having you and your sister here. We hope that you will both be able to come again next year. Perhaps

you'll be able to stay longer next time. A week is not really long enough, is it? If your school has five

weeks' holiday next year, perhaps you will be able to stay with us for two or three weeks.

       We have been back at school three weeks now. It feels like three months! I expect that you are both

working very hard now because you are in Grade Two now. Tom and Ann won't be in Grade Two until

2005. They went for a picnic yesterday but I didn't go with them, because I hurt my foot and I couldn't

walk very well. They went to an island and enjoyed themselves there. Tom, Ann and I send our best

wishes to you. We hope to see you soon.

                                                                                                                                            Yours,

                                                                                                                                           Michael

1. Who stayed with Michael for a holiday?

     ________________________________

2. How long did their holiday last for?

     ________________________________

3. From the sentence "It feels like three months!",

   we know that Michael has no interest in learning, right?

     ________________________________

4. Who will be in Grade Two next year?

     ________________________________

5. Why didn't Michael go to the island for a picnic yesterday?

     ________________________________

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填空题

由于成因关系，导致逆牵引背斜的储集层发育良好，保存较好，因此有利于（）。
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