本文的内容是tpo40综合写作题目解析+范文，托福综合写作可能是最让同学们头疼的题目，因为这个部分结合了听力、阅读和写作3个部分内容。通过分析
Integrated Writing
材料文本：
Many scientists believe it would be possible to maintain a permanent human presence on Mars or the Moon. On the other hand, conditions on Venus are so extreme and inhospitable that maintaining a human presence there would be impossible
First, atmospheric pressure at Venus’ surface is at least 90 times greater than the pressure at Earth’s surface This means that a force of 100 kilograms is pressing down on every square centimeter of surface All spacecraft that have landed on Venus have been crushed by this extreme pressure within an hour of landing. Almost anything humans might land on Venus would be crushed as well.
Second, as far as we know, there are no reservoirs of water on Venus' surface, and the planet s atmosphere, made up mostly of carbon dioxide, nitrogen, and sulfuric acid, contains hardly any oxygen or water vapor Water and oxygen would therefore probably have to be supplied to Venus from Earth. The idea of ensuring a regular supply of water and oxygen from Earth is impractical in the extreme and would probably defeat the purpose of establishing a permanent station on Venus.
Third, very little sunlight reaches the planet s surface. About 60 percent of the sunlight that hits Venus is reflected back into space by the thick clouds that fill the atmosphere, which means that only 40 percent of the sunlight can get through the clouds Below these clouds is a dense layer of carbon dioxide, which blocks even more light, so very little light reaches the surface. The lack of light would prevent the use of solar power cells, so humans could not get electricity to power their machines and equipment.
材料要点重现：在Lecture中教授提出反驳观点人类可以在火星生存，三个理由如下：在如此高的大气层中，金星表面的气压和地表是接近一样的;可以通过一些化学过程生产出水和氧气等人类生存必需物质;高空大气层中的云并不厚，阳光是可以照射到金星表明的。
高分词汇：due to, in contrast, filter through, generate
范文：
The reading mainly talks about there is no way we could maintain a human life on Venus due to the extreme and inhospitable environment. However the listening challenges what are stated in the passage by providing three strong reasons.
Firstly, in the reading, it is said that the atmospheric pressure of Venus’ surface is too greater than Earth’s so that human can’t land on it. In contrast, the listening holds a view that high up in the atmosphere, the pressure is much lower than at the surface. To state it more clearly, 50 kilometers up in the atmosphere, the pressure is equal to the normal pressure on earth. So we won’t get crushed.
Secondly, the passage asserts that there is no water, oxygen or any water vapor on Venus. However, the professor maintains an opposite opinion that the basic elements for human survival such as water and oxygen can be produced through chemical process. That is, there are carbon dioxide and sulfuric acid in the Venus’s atmosphere. So we don’t need to worry about that we can’t survive there.
Finally, the author of reading passage believes that there’s only a few sunlight could reach the Venus’s surface. On the other hand, the professor disagrees it with the point that clouds above 50 kilometers Venus’s surface are thin, so there would be some sunlight filtering through. What’s more, the cloud could reflect sunlight, so its solar-powered cells could collect both the direct sunlight and the reflected ones. There will be enough electricity generated to power the station.
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