题目内容
（请给出正确答案）
The word "device" in the first sentence of the third paragraph denotes______.
A．a satellite and terrestrial broadcast
B．a video-capable version of Apple iPod portable music-player
C．an individual show which is "streamed" across a 3G network
D．a pioneer personal video recorder
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更多“The word "device" in the first…”相关的问题
The author of this passage probably intended to explain ,______.
A．exactly how radar works
B．why the British used radio waves in their device
C．how radar(word and device)came to be
D．how radar helped the British win the Battle of Britain
We can learn from the text that a computer can ______.
A．be best used as a calculating device
B．be best used in word processing
C．find uses almost everywhere
D．have intelligence of its own
During World War II the British used a practical application of this principle to detect German planes on their way to bomb London long before the enemy was near the target. They used radio waves instead of sound waves, since radio waves can penetrate fog and clouds. The outnumbered Royal Air Force(RAF) always seemed to the puzzled Germans to by lying in wait at the right time and never to be surprised. It was radio echoes more than anything else that won the Battle of Britain.
Since the radio waves were used to tell the direction in which to send the RAF planes and the distance to send them (their rage of flight, in other words) , the device was called "radio directing and ranging" , and from the initials the word "radar" was coined.
Sound waves reflected from a hill can be used to estimate the______.
A．height of the hill
B．speed of sound
C．distance to the hill
D．intensity of sound
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.
A、regression
B、reading for ideas only
C、vocalization
D、word-by-word reading
From the text we know that ______.
A．the telephone was not network-oriented device from the beginning
B．the television was not network-oriented device from the beginning
C．the radio was a sound-based one-to-one device initially
D．the PC was a stand-alone device initially
A.at
B.by
C.for
D.to
A．Emphasis.
B．Contrast.
C．Exaggeration.
D．Interrogation.
Practical application of this principle resulted in______.
A．new electronic instruments for planes
B．a radio directing and ranging device
C．new radio sets for RAF bombers
D．an electronic detecting device
A.configure channel device type disk maxpiecesize 100m
B.configure channel device maxpiecesize 100m
C.configure channel device type maxpiecesize 100m
D.configure channel device type backpacesize 100m
