5、以单总线的CPU 数据通路结构为背景，试拟出加法指令 ADD R1，B（R2）的读取和执行流程。其中R1 表示目的寻址为寄存器寻址；B（R2）表示源寻址为变址寻址，B 是偏移量，R2 是变址寄存器。 - 查题网

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高等继续教育 / 计算机组成原理

5、以单总线的CPU 数据通路结构为背景，试拟出加法指令 ADD R1，B（R2）的读取和执行流程。其中R1 表示目的寻址为寄存器寻址；B（R2）表示源寻址为变址寻址，B 是偏移量，R2 是变址寄存器。

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计算机组成原理

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题干二、阅读理解阅读下面的文章，根据文章内容，完成相应的选择题。（每题10分） Door-Knocking Door-knocking is the most effective way of making face-to-face community contact, but it has become a lost art. With the recent focus on customer privacy, door-knocking seems like an intrusion into other people's lives. But those who try it for the first time are usually surprised by the pleasant reception they receive. Here are some suggestions that will help you promote your services face-toface. BEFORE YOU GO OUT ◆ Begin with a door hanger Try leaving a door hanger two days before you go door-knocking. It should briefly describe the project and say that someone will be around in person. ◆ Wear an official name tag Door-knockers should wear name tags with the logo of their organization. The best name tags will also include a color photo and the name of the caller. ◆ Have people knock their own blocks The easiest way to do door-knocking is to try your local area first. Being a neighbor creates an immediate connection with the person answering the door; after that, everything else is easy. ◆ Find a good excuse to door-knock A short survey about local concerns or a current project is a good excuse. Figure out responses for various situations. What if the person who answers the door cannot speak English? What if a child answers the door? WHEN YOU GO OUT ◆ When to go and what to do first The best times to knock are usually Saturdays. On other days, after dinner is ideal. When someone answers the door, smile and introduce yourself; say you are a volunteer and, if it helps, state where you live. Give the name of your organization and, briefly, the reason for the visit. ◆ State what action the other person should take and the benefits Tell the person what they need to do and how their actions will benefit themselves and others. If a person hesitates, emphasize benefits you've already mentioned and then, if necessary, add further benefits. If a person agrees, follow up immediately. If possible, get a donation, a signature, or a promise. ◆ Record contact information on the spot Record names, addresses, e-mail addresses, phone numbers, and responses to questions on the spot. You won't remember them later! 操作提示：通过题干后的下拉框选择题目的正确答案。 1. Why does the author say that door-knocking has become a lost art? 回答ABC正确获得10.00分中的10.00分 A. It is not effective, no one will take this method any more. B. People focus on privacy increasingly, so door-knocking seems like an intrusion into other people's lives C. It is very difficult to do door-knocking，no one knows how to do it now. 2. Which step should be firstly taken when you try door-knocking? 回答ABC正确获得10.00分中的10.00分 A. Find a good excuse to door-knock B. Wear an official name tag C. Leave a door hanger 3. What does the underlined phrase “on the spot” mean? 回答ABC正确获得10.00分中的10.00分 A. without delay B. at some place C. in a difficult situation 4. Which time is not appropriate for door knocking? 回答ABC正确获得10.00分中的10.00分 A. Saturday afternoon. B. Monday morning. C. Thursday evening. 5. Who will receive pleasant reception when they try door-knocking? 回答ABC正确获得10.00分中的10.00分 A. A stranger who is not living in this community and gives no notice for his/her visit. B. An offensive acquaintance who comes at any time. C. A neighbor who does good preparation and has significant project to introduce.管理英语3