Noise constitutes a real and present danger to people’s health. Day and night, at home, at work, and at play, noise can produce serious (62) and psychological stress. No one is (63) to this stress. Though we seem to (64) to noise by ignoring it, the ear, in fact, never closes and the body still (65) sometimes with extreme tension--to a strange sound in the night.The (66) we feel when faced with noise is the most common outward (67) of the stress building up inside us. The more (68) and more serious health hazards (69) with the stress caused by noise traditionally hay been given much (70) attention. (71) , when we are annoyed or made irritable by noise, we should consider, these symptoms fair warning (72) other things may be happening to us, some of which may be damaging our health.(73) many health hazards of noise, hearing loss is the most clearly (74) and measurable by heal professionals. The other hazards are harder to (75) . For many of us, there may be a risk that (76) to the stress of noise increases susceptibility to disease and infection. The more (77) among us may experience noise a (78) factor in heart problems and other diseases. Noise that causes annoyance and irritability in health persons may have more serious consequences for those already ill in mind or body. (79) , the link between noise and many disabilities or diseases has not yet been (80) demonstrated, and we (81) to dismiss annoyance caused by noise as a price to pay for living in the modem world. 64()
A. anxiety
B. 15 redness
C. annoyance
D. disgust
下列哪项不属于企业的社会责任( )。
A. 保护消费者权益
B. 保护社会利益和发展
C. 保护社会自然环境
D. 与竞争者和谐相处
The gravitational pull of the earth and moon is important to us as we attempt to conquer more and more of outer space. Here’s why.As a rocket leaves the earth, the pull of the earth on it becomes less and less as the rocket roars out into space. If you imagine a line between the earth and the moon, there’s a point somewhere along that line, nearer to the moon than to the earth, at which the gravitational pull of both the earth and the moon on an object is just about equal. An object placed on the moon side of that point would be drawn to the moon. An object placed on the earth side of that point would be drawn to the earth. Therefore, a rocket need be sent only to this "point of no return" in order to get it to the moon. The moon’s gravity will pull it the rest of the way.The return trip of the rocket to the earth is, in some ways, less of a problem. The earth’s gravitational field reaches far closer to the moon than does the moon’s to earth. Thus, it will be necessary to fire an earthbound rocket only a few thousand miles away from the moon to reach a point where the rocket will drift to earth under the earth’s gravitational pull.The problem of rocket travel is not so much concerned with getting the rocket into space as it is with guiding the rocket after it leaves the earth’s surface. Remember that the moon is constantly circling the earth. A rocket fired at the moon and continuing in the direction in which it was fired would miss the moon by a wide: margin and. perhaps continue to drift out into space until "captured" in another planet’s gravitational field. To reach the moon, a rocket must be tired toward the point where the moon will be when the rocket has traveled the: required distance. This requires precise calculations of the speed and direction of the rocket and of the speed and direction of the moon.For a rocket to arrive at a point where the moon’s gravity will pull it the rest of the way, it must reach a speed called the velocity of escape. This speed is about 25, 000 m/les (about 40,200 kilometers) per hour. At a speed less than this, a rocket will merely circle the earth in an orbit and eventually fall back to the earth. What does "an earthbound rocket" in Sentence 3 Para. 3 mean()
A rocket sent from the earth to the moon.
B. A rocket sent from the moon to the earth.
C. A rocket made of earth.
D. A rocket with no purpose.
Wielding a pole to pilot a punt is a skill that is rare outside the gorgeous waterways of Oxford and Cambridge and unknown in the ex-communist world. But nearly half of the 60-odd employees at Scud amore’s, Cambridge’s biggest punting rentals firm, are from Eastern Europe, chiefly Poles. The newly-arrived start off cleaning the boats; veterans of a summer or two, who have learnt to punt and chat to tourists in English, graduate to being "punt chauffeurs" on pounds 14 an hour.Estimating the overall effect of this influx of enthusiastic low-cost labor is hard, although a recent study by Ernst & Young, an accountancy fine, suggested that without it Britain’s GDP would be 0.2% lower. In fact, nobody knows how many workers from what were once called captive nations are actually in Britain. The government’s official (but voluntary) worker registration scheme records 345,000 since Britain opened its labor market to such workers in 2004.But, notes Dhananjayan Sriskandarajah of the Institute for Public Policy Research, a think tank, this disguises "huge chum". Workers may register and then leave the country. Others may not register at all. It costs pounds 70, and the advantages it offers, such as the right to claim the dole in future, may seem flimsy. It is the prospect of work, not state benefits, that attracts east Europeans to Britain.Four other west European countries Spain, Portugal, Finland and Greece opened their labor markets on May 1st to workers from the new Europe, while France promises partial liberalization and Holland is thinking about it. But that will do little to dent Britain’s lead. A widely-spoken language and thriving networks incorporating previous immigrants still make Britain a prime destination, with Ireland close behind.Does continuing the hit00-or-miss registration scheme make sense The government considered scrapping it altogether on May 1st, but decided not to. One reason is that some existing formalities could come in handy if, as seems likely, the EU expands on January 1st 2007 to include Romania and Bulgaria. It has not yet been decided whether workers from these two countries, which will be the poorest in the EU, should be given free access to Britain’s job market. Mr. Sriskandarajah’s institute reckons that, if allowed, 41,000 workers are likely to come from Romania and 15,000 from Bulgaria. The government could scrap the registration scheme for Poles and the like, while keeping it for the newcomers.The registration scheme may produce misleading figures, and it is a curious use of official time and energy at a moment when bureaucrats are too busy to deport foreign rapists. But it is a sop to public opinion, which is twitchy about Britain’s increasingly open borders. In the third paragraph the phrase "huge chum" is mentioned to imply that ()
A. there are many people coming into Britain for a job
B. people who come to Britain would be assimilated by the lifestyle and customs in Britain
C. Britain is open its labor market to all nations in the world, resulting in the surging of laborers from various countries, whether registering or not
D. there are so many opportunities of taking a job in Britain