在托福寫作練習過程中，相信TPO材料中的作文題目都會是大家的首選練習材料。上海新航道托福小編給考生們帶來了托福TPO50獨立寫作文本+音頻下載，希望可以幫助廣大托福考生輕松備考托福。

  托福TPO50獨立寫作文本及范文下載(含閱讀+聽力+范文)

  托福TPO50獨立寫作文本-閱讀部分

  Scientists are considering the possibility of sending humans to Mars in the coming decades. Although there have been successful manned missions to the Moon in the 1960s and 1970s, Mars is 150 times further away from Earth than the Moon is. Thus the project of sending humans to Mars would require solving an array of problems the Moon missions did not have to face.

  One problem is that a round-trip to Mars and back is likely to take at least two years. The trip to the Moon lasted only a few days, and it was easy to bring enough supplies of food, water, and oxygen; but the cargo capacity of space vehicles is too limited to put on board the food, water, and oxygen required by a crew for a period of two years. Without those essentials, though, a Mars mission is impossible.

  A second problem is that astronauts on the Mars mission would be in the zero-gravity environment of space for many months at a time. Spending a long time in the zero-gravity environment has negative effects on the human body, such as decreased muscle mass and lower bone density. Over the course of a two-year mission, the effects would be so severe; they would make it impossible for humans to make the trip without experiencing grave medical problems.

  Finally, astronauts on a mission to Mars would be exposed to dangerous levels of space radiation, much of which comes in the form of charged particles emitted by the Sun. Earth's magnetic field, which normally protects us from dangerous solar radiation, would not be able to protect a spaceship traveling in interplanetary space. Constructing a shield that would protect the whole spaceship from space radiation is at present impossible because it would add too much weight to the ship.

  Directions: You have 20 minutes to plan and write your response. Your response will be judged on the basis of the quality of your writing and on how well your response presents the points in the lecture and their relationship to the reading passage. Typically, an effective response will be 150 to 225 words.

  Summarize the points made in the lecture, being sure to explain how they respond to the specific concerns presented in the reading passage.

  托福TPO50獨立寫作文本-聽力音頻

  TASK2

  Do you agree or disagree with the following statement? All university students should be required to take history courses no matter what their field of study is. Use specific reasons and examples to support your answer.

  托福TPO50獨立寫作文本-聽力音頻

  下載鏈接：百度網盤鏈接：http://pan.baidu.com/s/1nvDS2Jf 密碼：2frh

  以上就是小編為大家帶來關于托福TPO寫作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福考試資料及機經.