Question

    About 97% of the world’s water is salty and is found in our oceans and seas. But, as we can’t drink sea water, 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 sea water 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 microscopic animals, which are in tur 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 counties have introduced fishing restrictions (限制) to protect fish stocks in the oceans and new techniques are being pioneered to cope 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 sea water is!

1.From the passage, we learn that _________.

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

2.What does the underlined phrase “cope with” mean in Chinse?

A.处理 B.保护 C.增加 D.检验

3.Which of the following is NOT a way being used to protect oceans?

A.The use of international agreements.

B.Forbidding fishing to protect fish socks.

C.The use of new techniques.

D.Raising people’s awareness of the need to protect oceans.

4.What would be the best title of the passage?

A.The Importance of Sea Water

B.Life in the Oceans

C.How to Protect Food Chains

D.How to Deal with Seawater Pollution

Answer

1.C

2.A

3.B

4.A

【解析】

这是一篇说明文。本文主要讲述了海水对人类的重要性，人们采取了一些措施来保护海洋。

1.

细节理解题。根据文章倒数第二段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.（人们曾经认为海洋是如此之大，我们是否向海洋倾倒垃圾或捕获大量的鱼和鲸鱼作为食物都无关紧要。但我们现在知道这不是真的，海洋中的鱼类资源已经开始下降。）可知，人类的过度捕捞使鱼资源减少。故选C。

2.

词句猜测题。根据划线词所在的句子Most counties have introduced fishing restrictions (限制) to protect fish stocks in the oceans and new techniques are being pioneered to cope with pollution.（大多数国家都采取了捕鱼限制措施，以保护海洋中的鱼类资源，并正在开创处理污染的新技术。）可知，cope with意为“处理”。故选A。

3.

细节理解题。根据文章最后一段第一句introducing international agreements to protect marine habitats.（引入国际协定来保护海洋栖息地）可知，A选项国际协定的使用是正确的；根据第二句new techniques are being pioneered to cope with pollution（正在开创技术来处理污染）可知，C选项新技术的使用是正确的；根据第三句the importance of protecting oceans is being made known to more people.（更多的人认识到保护海洋的重要性）可知，D项提高人们需要保护海洋的意识是正确的；B选项“为了保护鱼资源而禁止捕鱼，与原文中Most counties have introduced fishing restrictions (限制) to protect fish stocks in the oceans（大多数国家实行了捕鱼限制，以保护海洋中的鱼类资源）表达不一致。故选B。

4.

主旨大意题。文章第一段最后一句和本文最后一句How important sea water is!（海水是多么重要）点明了文章的主题，所以这篇文章最好的题目是“海水的重要性”。故选A。