SleepSmart is a clock that

A . It is supplied by the CSU/DSU. B . It is supplied by the far end router. C . It is determined by the clock rate command. D . It is supplied by the Layer 1 bit stream timing.

A . flashes at regular intervals at a frequency of 120 flashes or more per minute B . is yellow in color C . is visible over an arc of the horizon of not less than 180°nor more than 225° D . All of the above

A . has a declination equal to twice that of the Sun B . comprises two stars that appear close together C . is twice as bright as a single star D . suddenly becomes much brighter and then fade

A . generally shorter than the others and is used to steer with B . is longer than the others and is used as the stroke oar C . is raised in the bow of the boat for the steersman to steer by D . longer than the others used for steering

A . The Thread.sleep() method can take t1 as an argument. B . The Object.notify() method can take t1 as an argument. C . The Thread.yield() method can take t1 as an argument. D . The Thread.setPriority() method can take t1 as an argument. E . The Object.notify() method arbitrarily chooses which thread to notify.

A . exhibits a change in magnitude B . has a changing declination C . is increasing in SHA D . is also known as a red giant

A . charted record of atmospheric temperature over time B . charted record of atmospheric pressure over time C . graphic record of combustible gases measured in an atmosphere D . graphic record of vapor pressure from a flammable/combustible liquid

A . Added Turbo memory switching B . Removed internal OLTP limits C . Moved L3 cache onto the chip D . Increased DDR2 memory speed

A . abeam B . dead astern C . just aft of the bow D . on either side of the ster

A . It is supplied by the CSU/DSU. B . It is supplied by the far end router. C . It is determined by the clock rate command. D . It is supplied by the Layer 1 bit stream timing.

Big Ben is the great clock【C3】______up in a tower of the Parliament building. This is the building in London where laws are【C4】______. The people of London like to see Big Ben's four friendly faces. They like to hear the chimes【C5】______. 15 minutes. They like to hear the bell【C6】______on the hour. Bong! Bong! Bong! Big Ben's story started in 1834. In that year the old parliament building burned【C7】______. Its clock tower crashed to the ground. There【C8】______to be a new building—and a new clock. Plans were made. They called【C9】______a "King of Clocks, the biggest and best in the world". So the clock had to be big. And it had to【C10】______very good time. In two years the big clock was made. Five more years went by【C11】______the clock tower was finished. Then the four bells for the chimes were brought into the tower. And at last the giant hour bell was put in【C12】______. It rang our for the first time【C13】______July 11, 1859. This great bell had to【C14】______a name. A meeting of Parliament was called to pick【C15】______. "This clock is the King of Clocks," one man said. "Let's call the bell the Queen of Bells." "Then why not Victoria？" said【C16】______.(Victoria was the British queen at that time)The talk about names went【C17】______. Then Benjamin Hall got up to speak. He was a big man that others liked. By this time they were all【C18】______. Some one shouted, "Why not call it Big Ben and be done【C19】______it？" Everybody laughed, and the meeting broke up. But Big Ben it was from then on. Not just the bell【C20】______the whole clock. 【C1】 A．once B．usually C．ever D．even

In 1950 some research workers in America discovered that languages change at a steady rate through the centuries. They organized their investigation in the following ways. First, they prepared a list of 200 things for which there are common words in every language. Then they compared these words in modern languages with the ancient languages from which the modem ones had developed. They found that for a certain proportion of the 200 things, the ancient words continued to be used, though written or pronounced differently. But in other cases the ancient words had been replaced by new words which had been introduced into the language. After a thousand years, on the average, 81% of the old words (162 of the 200 words) were still in use. After 2000 years, on the average, 81% of these 162 words (or 66% of the original to tal of 200) remained. After 3000 years, 81% of these 131 words (or 53% of the original number) remained in use, and so on. Next this group of research workers investigated situations where two different languages had developed separately and independently, from the same ancient language, (In modern times, of course, such situations are very unlikely to occur. Why？) They found that after 1,000 years, as be fore, each daughter language shared only 66% of the basic 200-word vocabulary. Each daughter language, as before, derived 81% of its 200 words from the original parent language. But (as you might expect) the words which they kept were not quite the same. The proportion of words actually shared by the daughter languages was therefore 81% of 81%, which is 66% of the original 200 words. After 2000 years they shared 66% of 66% of the words, i.e. 43% of the original vocabulary. And after 3000 years they shared only 29% of the original vocabulary. A long time ago, some Eskimos, speaking the Eskimo language, left the mainland of Alaska and began to live in a group of islands (called the Aleutian Islands) at some instance from the coast. Recently, research workers compared the islander's language with the modern Eskimo language. They found that the Aleutians and the Eskimos shared only 29% of the words, on the stand ard list. From this fact the investigators were able to calculate the date of the event referred to at the beginning of this paragraph. From the passage, we can infer that language clock is ______. A．a mechanic clock B．a figurative clock C．an electronic clock D．a diamond clock

A.due B.about C.planned D.intended

A、going off B、going on C、going out D、going up

A) were not played B) not to play C) not be played D) did not play

A．fits B．meets C．satisfies D．suits

At that moment the land suddenly moved. The vibration was so strong that great buildings fell down, including the new seven-million-dollar City Hall, which the community had good reason to be proud of. Main water pipes burst. Cooking stoves overturned and electric wires flashed. The fires which started caused damage in large areas of the city. What had happened.'？ The rocks had broken apart along nearly three hundred miles of a crack in the earth of California, a feature of the physical map of that region known as a "fault". The damage was greatest in San Francisco which was near the center of the fault. Many buildings were destroyed by fire or by the earthquake itself, and hundreds of people were killed. Many people also died from diseases which broke out in the dirty camps later occupied by homeless people. The fires got out of control and, before they died out, four square mi-les of the city were burnt out. The loss of property was serious. The loss from fire alone amounted to 400,000,000 dollars, more than nine-tenths of the total damage. In those days this was an enormous sum. The effects of the earthquake were widespread. Rivers and streams began to run in new directions and their flow pat-terns were changed. Trees six feet in diameter were uprooted within half a mile of the central break. An area of wet fields on the side of a hill actually moved half a mile downwards. A road which crossed the fault burst apart and a gap of 21 feet remained between the broken ends. The California earthquake is remembered because it was so sudden and because it occurred in a city, where the dam-age and destruction were plainly visible and where many people were killed simultaneously. Actually, deaths on American roads from car accidents are now greater in almost any week of the year, but we are so accustomed to road accidents that we do not pay much attention to them. Scientists and engineers studied the effects of the San Francisco earthquake. The city was rebuilt, and new features were introduced to strengthen buildings and maintain a constant water supply in the event of. another earthquake. The water mains were fitted with control values which would enable water to travel by different routes round broken places. Large underground tanks were constructed to supply water if normal supplies could not be tapped. Special measures were taken to prevent fires, which often do more damage than earthquakes themselves. The San Francisco earthquake provided scientists with valuable information, since the effects of the break were visible and reports of the incident were an important contribution to the world's store of knowledge about earthquakes. The main cause of the great loss of property 'after the San Francisco earthquake in 1960 is______. A．falling buildings B．broken pipes C．fires D．floods

A．go B．would go C．will go D．have gone

A.he is born with the capacity to speak B.he has a brain more complex than an animal’s C.he can produce his own sentences D.he owes his speech ability to good nursing