小伙伴们，GRE考试大家复习的怎么样了呢？下面是帮考网分享的一些GRE考试阅读部分的复习资料，一起来看看吧！

Biologists know that some marine algae can create clouds by producing the gas dimethyl sulphide (DMS), which reacts with oxygen in air above the sea to form solid particles. These particles provide a surface on which water vapor can condense to form clouds. Lovelock contends that this process is part of global climatic-control system. According to Lovelock, Earth acts like a super organism, with all its biological and physical systems cooperating to keep it healthy. He hypothesized that warmer conditions increase algal activity and DMS output, seeding more clouds, which cool the planet by blocking out the Sun. Then, as the climate cools, algal activity and DMS level decrease and the cycle continues. In response to biologists who question how organisms presumably working for their own selfish ends could have evolved to behave in a way that benefits not only the planet but the organisms as well, cooling benefits the algae, which remain at the ocean surface, because it allows the cooled upper layers of the ocean to sink, and then the circulating water carries nutrients upward from the depths below. Algae may also benefit from nitrogen raining down from clouds they have helped to form.

1. According to the passage, which of the following occurs as a result of cooling in the upper layers of the ocean?

A. The concentration of oxygen in the air above the ocean’s surface decreases.

B. The concentration of DMS in the air above the ocean’s surface increases.

C. The nutrient supply at the surface of the ocean is replenished.

D. Cloud formation increases over the ocean.

E. Marine algae make more efficient use of nutrients.

2. Which of the following is most similar to the role played by marine algae in the global climate control system proposed by Lovelock?

A. A fan that continually replaces stale air in a room with fresh air from outside.

B. A thermostat that automatically controls an air-conditioning system.

C. An insulating blanket that retains heat.

D. A filter used to purify water.

E. A dehumidifier that constantly removes moisture from the air in a room.

3. The passage mentions the possible benefit to algae of nitrogen falling down in the rain most likely in order to

A. Provide support for Lovelock’s response to an objection mentioned in the passage.

B. Suggest that the climatic effects of DMS production have been underestimated.

C. Acknowledge that Lovelock’s hypothesis is based in part on speculation.

D. Demonstrate that DMS production alters the planet in more than one way.

E. Assert that algae are the sole beneficiaries of DMS production.

1

Biologists know that some marine algae can create clouds by producing the gas dimethyl sulphide (DMS), which reacts with oxygen in air above the sea to form solid particles.

生物学家们已知，一些海藻能够通过产生气态二甲基硫(DMS)，与洋面上空的氧反应，组成固态微粒，产生云。

2

These particles provide a surface on which water vapor can condense to form clouds.

水蒸气可以附着在这些微粒表面液化，从而形成云。

3

Lovelock contends that this process is part of global climatic-control system.

L 认为此过程是全球天气控制系统的一部分。

(contend (及物动词)主张，声称;(不及物动词)竞争，争论，争夺)

4

According to Lovelock, Earth acts like a super organism, with all its biological and physical systems cooperating to keep it healthy.

根据 L 的观点，地球如同一个超级有机体，靠它所有的生物和物理系统协作来保持健康。

好了，以上就是今天分享的全部内容了，各位小伙伴根据自己的情况进行查阅，希望本文对各位有所帮助，预祝各位取得满意的成绩，如需了解更多相关内容，请关注帮考网！