题目

阅读理解 Today we know Antarctica as an extreme environment containing ice and snow. But new research provides evidence that the area was very different in the past. The evidence was found inside a piece of earth sediment(沉积物) collected by researchers from a depth of about 30 meters below the ocean floor off the coast of Antarctica. In the sediment, they found forest soil estimated to be about 90 million years old. This would have been in the Cretaceous Period, when dinosaurs were the main land animals. Johann Klages is a geologist, working in the Institute's Helmholtz Center for Polar and Marine Research in Germany. He said an examination showed that the material formed on land, not in the ocean. The researchers estimate that the area – about 900 kilometers from the South Pole – had average yearly temperatures of about 12 to 13 degrees Celsius. During the warmest summer months, average temperatures likely reached between 20 to 25 degrees Celsius. The average yearly temperature in that area is about 40 degrees below zero Celsius. The examination results showed "a dense network of roots that spread through the entire soil layer," the Helmholtz Center said in a statement. The dark brownish-gray soil included fine dirt particles and hard clay, as well as substances linked to at least 65 different kinds of plants, the study found. Klages put that the plants included trees, ferns and flowering plants and while no animal remains were found, there were likely dinosaurs, flying reptiles and many insects in the environment. The researchers said that the rainforest environment in Antarctica was especially surprising because each year, the area experiences a four-month polar night when there is no sunlight to fuel plant life. （1） According to the passage, we can learn that ________. A . dinosaurs were from Antarctica B . Antarctica was always extremely cold C . the ocean floor is made up of sediment D . the area has been experiencing climate changes （2） What surprised the researchers? A . No animals left. B . No fertilizer to fuel plants. C . Roots spreading through the soil. D . The rainforest experiencing polar night. （3） Which column is the passage probably from? A . Science. B . Entertainment. C . Society. D . Fiction. （4） What can be a suitable title for the text? A . Antarctica, Once a Warm Rainforest B . Earth Sediment Found in Antarctica C . Antarctica - an Extreme Environment D . New Antarctica Found by Researchers 答案： D D A A

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