2. 考研
  3. About 3 billion people live within 100 miles of the sea, a number that could double in the next decade as humans flock to coasta

About 3 billion people live within 100 miles of the sea, a number that could double in the next decade as humans flock to coasta

admin2020-03-31  77
问题     About 3 billion people live within 100 miles of the sea, a number that could double in the next decade as humans flock to coastal cities like gulls. The oceans produce $ 3 trillion of goods and services each year and untold value for the Earth’s ecology. Life could not exist without these vast water reserves—and, if anything, they are becoming even more important to humans than before.
    Mining is about to begin under the seabed in the high seas—the regions outside the exclusive economic zones administered by coastal and island nations, which stretch 200 nautical miles offshore. Nineteen exploratory licences have been issued. New summer shipping lanes are opening across the Arctic Ocean. The genetic resources of marine life promise a pharmaceutical bonanza: the number of patents has been rising at 12% a year. One study found that genetic material from the seas is a hundred times more likely to have anti-cancer properties than that from terrestrial life.
    But these developments are minor compared with vaster forces reshaping the Earth, both on land and at sea. It has long been clear that people are damaging the oceans—witness the melting of the Arctic ice in summer, the spread of oxygen starved dead zones and the death of coral reefs. Now, the consequences of that damage are starting to be felt onshore.
    Thailand provides a vivid example. In the 1990s it cleared coastal mangrove swamps to set up shrimp farms. Ocean storm surges in 2011, no longer cushioned by the mangroves, rushed in to flood the country’s industrial heartland, causing billions of dollars of damage.
    More serious is the global mismanagement of fish stocks. About 3 billion people get a fifth of their protein from fish, making it a more important protein source than beef. But a vicious cycle has developed as fish stocks decline and fishermen race to grab what they can of the remainder. According to the Food and Agriculture Organization(FAO), a third of fish stocks in the oceans are over-exploited; some estimates say the proportion is more than half. One study suggested that stocks of big predatory species—such as tuna, swordfish and marlin—may have fallen by as much as 90% since the 1950s. People could be eating much better, were fishing stocks properly managed.
According to the first paragraph, which one is NOT true?
选项 A、The oceans produce numerous benefits for the Earth’s ecology.
B、A large number of people enjoy living by the sea or in coastal cities.
C、The oceans would produce $ 6 trillion of goods and services in the next decade.
D、The number of people living by the sea could probably be 6 billion in ten years.
答案C
解析 选项[A]对应第一段第二句：The oceans produce $3 trillion of goods and serviceseach year and untold value for the Earth’s ecology．其中，numerous benefits=untold value，故该项表述正确。选项[B]对应第一句：About 3 billion people live within 100 miles of the sea，a num-ber that could double in the next decade as humans flock to coastal cities like gulls．其中humansflock to coastal cities=people enjoy living in coastal cities，故该项表述正确。选项[C]属于无中生有，错误。选项[D]对应第一句的“a number that could double in the next decade”，从而推断该项表述正确。综上所述，该题答案为选项[C]。
转载请注明原文地址:https://www.kaotiyun.com/show/zB1Z777K
0

考研英语一

相关试题推荐
随机试题
最新回复(0)