Question

【题目】

Many environmental groups are warning that oceans of the world are in great danger．In the past 50 years，the number of water with zero oxygen（氧气）in the open ocean has increased more than four times．In the near coast water bodies，including the river mouth and seas，low﹣oxygen areas have increased more than 10 times since 1950．Scientists discover that oxygen continues dropping ever outside these zones as the Earth warms．To stop the drop，the world needs to control in both climate change and nutrient（养分）pollution．

Oxygen is a must to life in the oceans．The drop in ocean oxygen is among the most serious effects of human activities on the Earth's environment．

This is the first time for the scientists to take such a deep look at the causes，results and solutions to low oxygen worldwide，in both the open ocean and the near coast waters．About half of the oxygen on Earth comes from the ocean．However，mixed effects of nutrient loading and climate change are greatly increasing the number and size of "dead zones" in the open ocean and the near coast waters，where oxygen is too low to support most sea life．

In the areas traditionally called "dead zones", like those in Chesapeake Bay and the Gulf of Mexico，oxygen drops to levels so low that many animals have trouble in breathing and die．As fishes run away from these zones，their living areas become smaller and smaller．But the problem goes far beyond "dead zones"．Even smaller oxygen drops can hold up the growth in animals and lead to disease or even death．Low oxygen also can cause the release of dangerous chemicals．Although a few animals can grow well in dead zones，overall biodiversity（多样性）falls．

【1】How to stop the drop of ocean oxygen in the article？

A. By controlling in both climate change and nutrient pollution around the world．

B. By taking a deep look at the causes， results and solutions to low oxygen worldwide．

C. By running away from these zones， for the living areas become smaller and smaller．

D. By cutting down the number of animals in the oceans．

【2】Why are these waters called"dead zones" from the article？

A. Because the oxygen in these areas is too low for most sea life to live．

B. Because nutrient loading and climate change are greatly increasing．

C. Because there are no animals living in these areas．

D. Because low oxygen also can cause the release of dangerous chemicals．

【3】Which of the following statements is TRUE according to the article？

A. Only a few animals living in the sea need oxygen．

B. Climate change can help cut down the dead zones．

C. Fishes grow faster and better in low oxygen areas．

D. Human activities have many serious effects on ocean environment．

Answer 1

【答案】

【1】A

【2】A

【3】D

【解析】

短文大意：本文是环保类阅读，介绍了过度捕捞对海洋产生的破坏以及由此带来的系列问题，呼吁人们团结起来建立"禁渔区"以保护海洋。

【1】A．细节理解题．根据To stop the drop，the world needs to control in both climate change and nutrient pollution为了阻止这种下降世界需要控制气候变化和营养污染，可知By controlling in both climate change and nutrient pollution around the world符合文意，故选A。

【2】A．细节判断题．根据where oxygen is too low to support most sea life氧气太低无法维持大部分海洋生物，可知这些水域被称为“死亡地带”，是因为这些地区的氧气太低导致大多数海洋生物无法生存，Because the oxygen in these areas is too low for most sea life to live符合文意，故选A。

【3】D．细节判断题．根据 The drop in ocean oxygen is among the most serious effects of human activities on the Earth's environment海洋氧的减少是人类活动对地球环境最严重的影响之一，可知人类活动对海洋环境有许多严重的影响，Human activities have many serious effects on ocean environment说法正确，故选D。

本文篇幅较长，难度适中，考生应认真阅读文章，理解大意，仔细审题，准确定位信息，在文中找到相对应的答案或者依据。