题目内容
13．
About 97% of the world's water is salty and is found in our oceans and seas．But，as we can't drink seawater，how can it be important？Every part of our seas and oceans contains an amazing number of animals and fish that live at different ocean depths．Most of the different species of animals and fish depend on simple plants for their food．These simple plants called algae （海藻） drift near the surface of the ocean and use sunlight to turn carbon dioxide and water into food and oxygen．In fact，algae produce over half of the oxygen people breathe．How important seawater is!
Each plant or animal in our seas and oceans is an important link in a food chain．The algae are eaten in large amounts by tiny animals，which are in turn consumed by larger animals．These food chains are delicately （微妙地） balanced．
The bad news about the food chains in the oceans is that they are under threat because of man．People once thought that the oceans were so big that it didn't matter if we dumped rubbish into them or caught huge quantities of fish and whales for food．But we now know this is not true and fish stocks in the oceans have started to drop．
Thankfully，the world is taking steps to protect the future of our oceans by introducing international agreements to protect marine habitats．Most countries have introduced fishing restrictions （限制） to protect fish stocks in the oceans and new techniques are being pioneered to deal with pollution．Finally，the importance of protecting oceans is being made known to more people．This is just the beginning of a long process to protect the oceans for our future．We depend on the oceans for fish which are an important part of the human diet．How important seawater is!
32．People used to think that the rubbish thrown into the seaD．
A．wouldn't harm the fish in the sea
B．would change the balance of the food chain
C．would be broken down in the sea
D．wouldn't do much harm to the sea
33．From the passage，we learn thatC．
A．most fish and sea animals live at the surface of the seas
B．it is very difficult to break the balance of a food chain
C．over-fishing has caused the decrease in fish stock
D．it won't be long before the problems concerning oceans will be solved
34．Which of the following is NOT a way being used to protect oceans？B
A．The use of international agreements．
B．Forbidding fishing to protect fish stocks．
C．The use of new techniques．
D．Raising people's awareness of the need to protect oceans．
35．What would be the best title of the passage？A
A．The Importance of Seawater．
B．Life in the Oceans．
C．How to Protect Food Chains．
D．How to Deal with Seawater Pollution．
分析 本文是一篇新闻报道类阅读，主要讲了海水为什么重要，由于海水的污染所造成的一些后果以及如何保护海洋．
解答 32-35．DCBA
32题答案：D考查细节推理，根据文章第二段的People once thought that the oceans were so big that it didn't matter if we dumped rubbish into them…（人们曾经认为海洋如此之宽广，即使我们向里面倾倒垃圾也没什么…）可知本题答案为D选项．
33题答案：C考查细节推理，根据文章最后一段的Most countries have introduced fishing restrictions （限制） to protect fish stocks in the oceans…（很多国家制定了捕鱼限制，目的是为了保护海洋里的鱼资源…）可知"过度的捕鱼已经使鱼资源减少"，故本题答案为C选项．
34题答案：B考查细节推理，根据文章最后一段的Most countries have introduced fishing restrictions （限制） to protect fish stocks in the oceans…（很多国家制定了捕鱼限制，目的是为了保护海洋里的鱼资源…）可知B选项"为了保护鱼资源而禁止捕鱼"与原文表达不一致，故本题答案为B选项．
35题答案：A考查主旨大意，本文第一段最后一句点明了文章的主题But，as we can't drink seawater，how can it be important？但是由于我们不喝海水，它怎么会如此重要呢？故本题答案为A选项．
点评 本文是一篇新闻报道类阅读，题目涉及多道细节理解题，做题时结合原文和题目有针对 性找出相关语句进行仔细分析，结合选项选出正确答案．推理判断也是要在抓住关键句子的基础上合理的分析才能得出正确的答案．
