While drunken driving may be on the decline, traffic safety experts remain puzzled over how to deal with another alcohol related danger: drunken pedestrains. Pedestrians struck and killed by cars often are extremely drunk. In fact, they are intoxicated  more frequently and with higher blood alcohol levels than drunken drivers who are killed in accidents, various studies have shown. Forty percent of adult pedestrians involved in fatal crashes have a blood alcohol level of at least 0.10 which by law in most states signifies intoxication compared to only 25 percent of drivers in deadly accidents, according to recent federal data. Some types of pedestrain accidents have been declining nationally, especially those involving children, but the number of adult pedestrians who are drunk when killed in traffic has remained  ly steady at 2500 a year. The total number of pedestrians killed annually in U.S. traffic accidents is at least 7000, or one of every seven highway accidents resulting in death. "We're dealing here, we think, with a very severe drinking problem that leads to a severe highway safety problem," said Richard Blomberg, president of Dunlap and Associates Inc, in Norwalk, Coon. w.w.^w.k.&s.5*u.c.#om.... Blomberg, whose consulting company found a very high rate of alcohol involvement in a controlled study of pedestrian accidents in New Orleans, was among several researchers who spoke on the topic at the annual meeting of the Research council's Transportation Research Board(TRB)  in Washington in January. Pedestrian accidents have not received enough attention in the past, according to Kay Colpitts, who chairs the board's committee on pedestrians. Few methods exist to monitor walking habits, she said, and researchers have been mystified about how to prevent disasters. Among the causes of walkers' accidents, the most serious problem is .  _ A) long delays in traffic signals that may make people cross streets without paying attention to traffic rules B) alcohol C) a lack of adult keeping eyes on many children involved in accidents D) former drunken drivers whose licenses are not allowed to use for a time
B


Hiking can be a pleasant as well as a not so pleasant adventure. You will have to take a number of measures so that your hike is a pleasant experience.  Hiking Tip 1 -- Start Early Most hiking experts hold the opinion that it is rather sensible to start hiking at 3 or 4 in the morning, even if it is a full-day hike. Since most hikes are conducted at high altitudes, starting off early will make sure that you are back down during the afternoon hours.    Hiking Tip 2 -- Be Light Since we are anyway talking about the load you will carry, another important hiking tip is to carry fewer loads. If you are going on a hiking trail on a familiar path, you will need reduced survival items, as chance that you will get lost or hurt yourself on these hiking trails is little.  Hiking Tip 3 -- Reduce the Number of Breaks Once you start your hike, you should make sure you do not take too many breaks. You will need to maintain a consistent speed and minimize the number of stops which you take. Speed and rest stops help distinguish an inexperienced hiker from an expert hiker. An inexperienced hiker will have bursts of speed and energy and it will be followed by rest stops. This results in slowing down the general speed. Hiking Tip 4 -- Tip for Children Do you plan to take your kids along with you on the hiking trail? Well, then you must be looking for hiking tips for kids! You will have to educate them about nature and also get them into an exercise routine before taking them on a hike. Kids have a tendency to run in the beginning. This exhausts them and they have to be carried, which is certainly not the best of ideas. You are advised to start hiking early in order to   _  . A) finish your hiking in a day B) enjoy your hiking completely C) avoid getting tired D) get back down early
D


Q: Against the supposition that forest fires in Alaska, Canada and Siberia warm the climate, scientists have discovered that cooling may occur in areas where burnt trees allow more snow to mirror more sunlight into space. This finding suggests that taking steps to prevent northern forest fires to limit the release of greenhouse gases may warm the climate in northern regions. Usually large fires destroyed forests in these areas over the past decade. Scientists predict that with climate warming, fires may occur more frequently over the next several centuries as a result of a longer fire season. Sunlight taken in by the earth tends to cause warming, while heat mirrored back into space tends to cause cooling. This is the first study to analyze all aspects of how northern fires influence climate. Earlier studies by other scientists have suggested that fire in northern regions speed up climate warming because greenhouse gases from burning trees and plants are released into the atmosphere and thus trap heat. Scientists found that right after the fire, large amounts of greenhouse gases entered the atmosphere and caused warming. Ozone  levels increased, and ash from the fire fell on far-off sea ice, darkening the surface and causing more radiation from the sun to be taken in. The following spring, however, the land within the area of the fire was brighter than before the fire, because fewer trees covered the ground. Snow on the ground mirrored more sunlight back into space, leading to cooling. "We need to find out all possible ways to reduce the growth of greenhouse gases in the atmosphere." Scientists tracked the change in the amount of radiation entering and leaving the climate system as a result of the fire, and found a measurement closely related to the global air temperature. Typically, fire in northern regions occurs in the same area every 80 to 150 years. Scientists, however, found that when fire occurs more frequently, more radiation is lost from the earth and cooling results. Specifically, they determined when... .Earlier studies about northern forest fires   _  . A) analyze all aspects of how northern fires influence climate B) indicate that forest fires will pollute the atmosphere C) suggest that people should take measures to protect environment D) suggest that the fires will speed up climate warming
A: D


(Q).
The Post Office in Britain is famous for getting letters and parcels to places to which they should be sent. The problem is that we the public have to observe the rules. For example, we must put a stamp on a letter. If we don't, the receiver will have to pay double. We often see the sign ALL LETTERS MUST BE CORRECTLY ADDRESSED. These days, this means having to use postcodes. If you didn't use a postcode, it's no good complaining that your letter should have arrived sooner. Parcels are a problem because they must be correctly packaged. If Aunt Sophie is going to send you a jar of your favorite jam, she will have to wrap it up well. The most important thing we have to do is to address our letters and parcels legibly  and correctly. This means clear handwriting and correct spelling. What we should do and what we actually do are often miles apart. Recently, the Post Office had to deliver a letter which showed a name followed by the word Arijaba. What is this, do you think? Arabic? Hiodustani ? Wrong both times! Say it out loud and you'll see it's just plain English. HARWICH HARBOUR! From the passage we can see that postmen   _  . A) have no difficulty in delivering any letters B) have difficulty in delivering mis-spelt letters C) won't deliver any letters with bad handwriting D) can deliver all letters to their destinations
(A).

B