(Q).
The orange towers of the Golden Gate Bridge-probably the most beautiful, certainly the most photographed bridge in the world-are visible from almost every point of elevation in San Francisco. The only cleft  in Northern California's 600-mile continental wall, for years this mile-wide strait was considered unbridgeable. As much an architectural as an engineering feat, the Golden Gate took only 52 months to design and build. Designed by Joseph Strauss, it was the first really massive  suspension bridge, with a span of 4200ft, and until 1959 ranked as the world's longest. It connects the city at its northwesterly point on the peninsula to Marin County and Northern California, and was designed to with-stand  winds of up to a hundred miles an hour and to swing as much as 27ft. Handsome on a clear day, the bridge takes on an eerie  quality when the thick white fogs pour in and hide it almost completely. You can either drive or walk across. The drive is the more thrilling of the two options as you race under the bridge's towers, but the half-hour walk across it really gives you time to take in its enormous size and absorb the views of the city behind you and the head-lands of Northern California straight ahead. Pause at the midway point and consider the seven or so suicides  a month who choose this spot,260ft up, as their jumping-off spot. Monitors of such events speculate that victims always face the city before they leap. In 1995,when the suicide toll from the bridge had reached almost 1000,police kept the figures quiet to avoid a rush of would-be suicides going for the dubious  distinction of being the thousandth person to leap. Perhaps the best loved symbol of San Francisco, in 1987 the Golden Gate proved an auspicious  place for a sunrise party when crowds gathered to celebrate its fiftieth anniversary. Some quarter of a million people turned up (a third of the city's entire population);the winds were strong and the huge numbers caused the bridge to buckle, but fortunately not to break. Which of the following is TRUE? A) The Golden Gate is the longest bridge in the world. B) So far about 1000 people killed themselves from the Golden Gate. C) It took the workers 52 months to build the Golden Gate. D) San Francisco had a population of about 750,000 in 1987.
(A).
D


(Q).
Scientists Alan M.Goldberg and Thomas Hartung describe recent advances in replacing the use of animals in toxicology testing.Improvements in cell and tissue culture technologies,for example,allow a growing number of tests to be performed on human cells alone.Computer models are becoming increasingly complex and many could one day become more accurate than trials in living animals. Since the late 1990s,Huntingdon Life Sciences--a company that conducts testing of substances on animals conducted by the Environmental Protection Agency and the Food and Drug Administration--has become a proving ground for aggressive strategies by animal-rights militants  .At a hearing,a Senate.committee listened to testimony  against Huntingdon employees and financial institutions providing services to the company.One experimentation witness at the hearing insisted that any means necessary were justified  to spare animals' lives;he has previously accepted the idea of murder to that end. Use of animals in testing and in biomedical research continues to be necessary in many instances and is ethically preferable to experimenting on humans or giving up cures that could save human lives.But for the sake of people and animals alike,the development and acceptance of animal substitutes deserve enthusiastic support. In some instances, substitutes are already thought as good or better than animals,but supervising agencies have yet to catch up.In both the European Union and the U.S.,scientists and companies wanting to use the new alternative tests complain that regulatory standards for proving a drug or chemical to be safe for humans force the continued use of animals.Thus,animal-loving Americans might turn to persuading the EPA and the FDA to speed validation of new methods so that they can be more widely employed.And animal advocates  who want to influence business could consider investing in the small biotech's and large pharmaceutical  companies that are working to develop alternatives to animals in research. _   plays a leading role in replacing the use of animals in testing. A) Huntingdon Life Sciences B) Improvement in technologies C) Animal-fights militants D) Scientists Alan and Thomas
(A).
B


(Q).
The Best of Alaska Nothing evokes Alaska like a whale exploding out of the water or an eagle pulling a silver fish from the river. Combine these images with high mountains, brilliant icebergs and wonderful meals and you really do have the Best of Alaska! Join us for an unforgettable 7-day excursion to the last frontier! Highlights : JUNEAU: Juneau, the state capital, is rich in culture and scenic beauty. It is here that we start and end our trip. HAINES: Haines is a small community located along the fjords . The natural beauty and expansive wilderness found here have made Haines a premier center for adventure in Alaska. ALASKA INDIAN ARTS: Alaska Indian Arts is a nonprofit corporation dedicated to the preservation and continuation of traditional native craft and culture of the Northwest Native Tribes. We spend a few hours learning carving, native beading and culture from these master artists. SKAGWAY: Skagway is a lively town, which still reflects its gold rush roots and contains colorful shops. In Skagway, we stop by the Klondike Gold Rush National Park Visitor's Center and ride the White Pass Yukon Route Railway. GUSTAVUS: Gustavus is the gateway to Glacier Bay National Park. We'll stay at a comfortable lodge here for two nights. This will be the base for both the whale-watching excursion and a full day cruise  in Glacier Bay. DATES/PRICES: 2014: May 16, June 20, July 18, August 15. 7 days--$3,500, including lodging, all meals, excursions, guides, park fees, sales taxes, and transportation between Juneau, Skagway, Haines, and Gustavus. Not included: Alcohol, personal items, airfare to and from Juneau. Contact: Email: info@alaskamountainguides.com Call: 18007663396 Write: Alaska Mountain Guides & Climbing School P.O. Box 1081, Haines AK 99827 Which of the following requires a participant to pay additional fees? A) Going from Gustavus to Juneau by train. B) A full day cruise in Glacier Bay. C) Having the last supper at Juneau. D) Flying from Juneau to his hometown.
(A).

D