欧美精品午夜,午夜精品婷婷,国产综合久久

主頁>托福TPO>正文

托福TPO34綜合寫作（閱讀+聽力文本）

2017/4/17 14:53:25來源：新航道作者：新航道

雅思/托福/國際備考寒假班

托福?？?，最新時間出爐！

多鄰國英語考試-2024國際學校及出國留學考試新選擇

摘要：上海新航道托福小編為托?？忌鷤儨蕚淞送懈＞C合寫作TPO34,希望各位考生們在TPO寫作真題里能夠得到鍛煉，祝廣大托?？忌軌蛉〉美硐氤煽儭?/p>

上海新航道托福小編為托?？忌鷤儨蕚淞送懈＞C合寫作TPO34,希望各位考生們在TPO寫作真題里能夠得到鍛煉，祝廣大托?？忌軌蛉〉美硐氤煽?。

Reading

A huge marine mammal known as Steller’s sea cow once lived in the waters around Bering Island off the coast of Siberia. It was described in 1741 by Georg W. Steller, a naturalist who was among the first European to see one. In 1768 the animal became extinct. The reasons for the extinction are not clear. Here are three theories about the main cause of the extinction.

First, the sea cows may have been overhunted by groups of native Siberian people. If this theory is correct, then the sea cow population would have originally been quite large, but hundreds of years off too much hunting by the native people diminished the number of sea cows. Sea cows were a good source of food in a harsh environment, so overhunting by native people could have been the main cause of extinction.

Second, the sea cow population may have become extinct because of ecosystems disturbances that caused a decline in their main source of food, kelp (a type of sea plant). Kelp populations respond negatively to a number of ecological changes. It is possible that ecological changes near Bering island some time before 1768 caused a decrease of the kelp that the sea cows depend on.

Third, the main cause of extinction of the sea cows could have been European fur traders who came to the island after 1741. It is recorded that the fur traders caught the last sea cow in 1768. It thus seems reasonable to believe that hunting by European fur traders, who possessed weapons that allowed them to quickly kill a large number of the animals, was the main cause of the sea cow’s extinction.

托福TPO34獨立寫作題目

Do you agree or disagree with the following statement?

Educating children is a more difficult task today than it was in the past because they spend so much time on cell phone, online games, and social networking Web site.

Use specific reasons and examples to support your answer.

以上就是小編為大家帶來關于托福TPO閱讀資料供大家閱讀參考，新航道托福資料頻道將第一時間為考生發布最全、最新、最專業的托福資訊及托?？荚囐Y料及機經.

上海新航道托福培訓

13年來1000+資深講師、自主研發教材、個性化教學，

讓100W+學子從新航道成功留學海外名校。

免費獲取資料