【单选题】【消耗次数：1】
流量控制是指（ ）。
①
数据传输需要进行连接建立、数传的维护、拆除连接阶段
②
采用某种技术，有效地、动态地分配网络资源，对网络中的通信量进行平滑的方法
③
根据子网的特性最佳的利用网络资源
④
防止所传数据帧的错误、丢失与重复
参考答案：
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relaxed
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natural
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①
news
②
their work
③
information
④
entertainment
【单选题】
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①
regression
②
reading for ideas only
③
vocalization
④
word-by-word reading
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①
It helps people read at a comfortable speed.
②
It makes people stretch their eyes when reading.
③
It forces people to overcome bad reading habits.
④
.It lets people look back over what they have just read
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①
The reader reads fast, but he understands everything he reads.
②
The reader reads slowly and he understands everything he reads.
③
The reader reads fast without understanding everything he reads.
④
The reader reads slowly, but he doesn’t understand everything he reads
【单选题】
For many people today, reading is no longer relaxation. To keep up their work they must read letters, reports, trade publications, interoffice communications, not to mention newspapers and magazines: a never-ending flood of words. In getting a job or advancing in one, the ability to read and comprehend quickly can mean the difference between success and failure. Yet the unfortunate fact is that most of us are poor readers. Most of us develop poor reading habits at an early age, and never get over them. The main problem lies in language itself—words. Single words have little meaning until they are combined into phrases, sentences and paragraphs. Unfortunately, however, the untrained reader does not read groups of words. He reads one word at a time, often regressing to reread words or passages. Regression, or looking back over what you have just read, is a common bad habit in reading. Another habit which slows down the speed of reading is vocalization—sounding each word either orally or mentally as one reads. To overcome these bad habits, some reading clinics use a device called accelerator (加速器), which moves a bar down the page at a predetermined speed. The bar is set at a slightly faster rate than the reader finds comfortable, in order to “stretch” him. The accelerator forces the reader to read fast, making word-by-word reading, regression and vocalization virtually impossible. At first, comprehension is sacrificed for speed. But when you learn to read ideas, you will not only read faster, but your comprehension will improve. Many people have found their reading skills improved a lot after some training. Most people can’t read and comprehend quickly mainly because __________.
①
they don’t read groups of words
②
they don’t realize they have poor reading habits
③
they don’t like to be trained in reading skills
④
they don’t understand words when put together