题型:阅读理解 题类: 难易度:普通
河北省"五个一"名校联盟2025届高三上学期第一次联考英语试卷
Much of Earth is unexplored. An ocean census (普查) hopes to change that.
"Earth" has always been an odd choice of name for the third planet from the Sun. After all, two-thirds of its surface is covered not by earth at all, but by oceans of water.
Because humans are land animals, most of the Earth remains under-explored. Marine (海洋的) biologists think the oceans might host more than 2 million species of marine animals, of which they have so far identified perhaps a tenth.
A new initiative hopes to change this. Launched in London on April 27th, Ocean Census aims to discover 100, 000 new species of marine animal over the coming decade. It is backed by Nekton, a British marine-research institute, and the Nippon foundation, Japan's biggest charitable foundation. Its first ship, the Norwegian icebreaker Kronprins Haakon, set sail on April 29th, bound for the Barents Sea.
The initiative is happening for two reasons. One is that the longer scientists wait, the less there will be to identify. Climate change is heating the oceans, as well as making them more acidic (酸的) as carbon dioxide dissolves goes into the water. Already around half the world's coral reefs (珊瑚)—thought to be home to around 25% of all ocean species—have been lost. Oliver Steeds, Nekton's founder, says that one of Ocean Census's priorities will be identifying species thought to be in the greatest danger from climate change. The second reason is technological. Marine biologist s find about 2, 000 new species a year, a rate hardly changed since Darwin's day. Ocean Census is betting it can go faster.
Exactly what the new effort might turn up is impossible to predict. But history suggests it will be fruitful. Half a century ago scientists discovered hot vents (喷口) on the sea bed. These days, such vents are one possible candidate for the origin of all life on Earth. There are more practical benefits, too. Many drugs, for example, come originally from biological substance. An ocean full of unidentified life will almost certainly prove a rich mine from which to mine more.
Holidays
Holiday News Vacancies(空位) now and in the school holidays at a country hotel in Devon. This comfortable, friendly home-from-home lies near the beautiful quiet countryside, but just a drive away from the sea. The food is simple but good. Children and pets are welcome. Reduced prices for low season. |
The Snowdonia Centre The Snowdonia Centre for young mountain climbers has a mountain climbing lesson. The beginners' costs are £57 for a week, including food and rooms. Equipment is included except walking shoes, which can be hired at a low cost. You must be in good health and prepared to go through a period of body exercises. This could be the beginning of a lifetime of mountain climbing adventure. |
The World Sea Trip of a Lifetime Our World Sea Trip of 2008 will be unlike any holiday you have ever been on before. Instead of one hotel after another, with all its packing and unpacking, waiting and traveling, you just go to bed in one country and wake up in another. On board the ship, you will be well taken care of. Every meal will be first-class and every cabin like your home. During the trip, you can rest on deck(甲板), enjoy yourself in the games rooms and in the evening dance to our musical team and watch our wonderful play. You will visit all the places most people only dream about — from Acapulco and Hawaii to Tokoy and Hong Kong. For a few thousand pounds, all you've ever hoped for can be yours. |
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