题目内容
（请给出正确答案）
[主观题]
It is not your memory that is at falut. （）____________________.
提问人：网友dongzhuming
发布时间：2022-01-07
如搜索结果不匹配，请 
| 阅读理解。 |
| Your voice is the only means of communicating over the telephone. Even so, watch your body language and facial expressions-they affect the way you sound. If you are sleepy, for example, you often will sound tired or breathless. To keep a healthy and bright tone (音调) in your voice, smile when talking on a phone. Don't answer the phone in a rush. Take a deep breath, and then breathe out slowly as you pick up the receiver. You will sound more relaxed. If you recognize the other person' s voice, use his/her name on your greeting. Useitagain during the conversation and when parting. When making a difficult call, work out exactly what you wish to say. Stand while making the call-it will help you sound more confident. Get fairly quickly to the point-"The reason I' m calling is..."Try to drop the pitch (音高) of your voice at the ends of sentences-it will help you be more sure about what you said. If you know somebody wants to talk a lot, make it clear at the start of the call that you have only a little time. There are several ways of making a call short:" It ' s been lovely talking to you, but I really must go now." or" I know you are quite busy, so I better go now."If all fails, try," My other line is ringing. Or"I think there' s someone at the door." When leaving a message on someone s answering machine, speak clearly and slowly to allow the person to take down any details as your message plays back. Many people feel uneasy with answering machines. Again, form a picture of the other person in your mind, and you will sound more relaxed. With the increasing use of tele-communication and mobile phones, it has become of great importance that we pay special attention to HOW and WHAT we speak on the phones. |
| 1. In Paragraph 1, the author suggests paying attention to your _____. |
| A. voice B. body language C. tone D. health |
| 2. What does the underlined word "it" in Paragraph 2 refer to？ |
| A. The phone. B. The receiver. C. The name. D. The greeting. |
| 3. The author supports his idea in Paragraph 4 through _____ . |
| A. experiments B. explanations C. stories D. examples |
| 4. What would be the best title for this passage？ |
| A. Talking on a Phone B. Keep Your Voice Sweet C. Voice and Body Language D. Body Language is Important |
Using GRAPH-SEARCH, when a node is expanded it is added to the closed set. This means that even if a node is added to the fringe multiple times it will not be expanded more than once. Consider an alternate version of GRAPH-SEARCH, MEMORY-EFFICIENT-GRAPH-SEARCH, which saves memory by (a) not adding node n nn to the fringe if STATE[nnn] is in the closed set, and (b) checking if there is already a node in the fringe with last state equal to STATE[nnn]. If so, rather than simply inserting, it checks whether the old node or the new node has the cheaper path and then accordingly leaves the fringe unchanged or replaces the old node by the new node. By doing this the fringe needs less memory, however insertion becomes more computationally expensive. More concretely, MEMORY-EFFICIENT-GRAPH-SEARCH is shown below with the changes highlighted.
Now, we've produced a more memory efficient graph search algorithm. However, in doing so, we might have affected some properties of the algorithm. Assume you run MEMORY-EFFICIENT-GRAPH-SEARCH with the A* node expansion strategy and a consistent heuristic, select all statements that are true.
