Question

【題目】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 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 microscopic 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 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】People used to think that the rubbish thrown into the sea .

A. wouldn’t harm the fish in the sea

B. wouldn’t change the balance of the food

C. wouldn’t be broken down in the sea

D. wouldn’t do much harm to the sea

【2】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

【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 stocks.

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 Seawater.

B. Life in the Oceans.

C. How to Protect Food Chains.

D. How to Deal with Seawater Pollution.

Answer 1

【答案】

【1】D

【2】C

【3】B

【4】A

【解析】試題分析：本文講述的海洋以及海水對人類的重要性，同時也描述了海洋的現(xiàn)狀以及人們?yōu)榱吮Ｗo海洋所做的努力。

【1】D 細節(jié)題。根據(jù)文章第四段前三行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.可知以前人們認為向海洋里扔垃圾是沒有關(guān)系的，故D正確。

【2】C 細節(jié)題。根據(jù)文章第四段最后一句But we now know this is not true and fish stocks in the oceans have started to drop.可知現(xiàn)在人們已經(jīng)知道過度捕撈讓 海洋里的魚變少了。故C正確。

【3】B 細節(jié)題。根據(jù)文章最后 一段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 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 seawater is!可知ACD三項都是本文所講述的保護海洋的方法。B項文章沒有提及。

【4】A 主旨大意題。根據(jù)文章第二段最后一句In fact, algae produce over half of the oxygen people breathe. How important seawater is!可知海水對我們?nèi)祟悂碚f是非常重要的。故本文講述的是海水的重要性。A正確。