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存储器的技术指标包括【10】、存取时间和存取周期、可靠性、功耗。

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宽带无线接入技术主要有本地多点分配业务(LMDS)和【20】两种。

[听力原文]8-10W: It’s almost vacation time. Have you found a summer job yetM: I suppose I can work at the boy’s camp where I worked last summer. But camp jobs don’t pay much.W: I think I can get a job at the Edgewater Hotel. A friend of mine was a waiter there last summer. The pay wasn’ t good, but he got lots of tips.M: My sister worked there last summer, making beds and cleaning bathrooms. She didn’t like it, but she earned quite a lot of money.W: A friend of my sister’ s did that one summer.M: What I want is a job outside. After sitting in college classes all winter, I’ d like a job in the open air.W: The high school kids earn a lot of money every summer cutting grass. My brother is only fourteen, but he gets five dollars every time he cuts somebody’ s grass, and it only takes him an hour. He just rides around on the machine that he bought, and the machine does all the work.M: That’ s pretty good. I used to cut grass when I was in high school. But now I thought I might work for a road-building company, or something like that.W: It would be a good experience. You could earn a lot, too. What kind of job does the man prefer（）

A. Camp jobs.
B. A job at a hotel.
C. A job in the open air.
D. Cutting grass.

[问题2] 我能向对方发消息，对方也能向我发消息，但当对方响应我发出的消息时，我却什么也收不到，这是为什么

Questions 29 to30 are based on the following news. At the end of the news item, you will be given 10 seconds to answer the questions. Now listen to the news The aid will be increased__________.

A. to the target set by the UN
B. to the target set for 2013
C. to about $12 billion annually
D. by about $12 billion annually