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GREEN TOEFL【荐】.ppt
Coral Colonies Coral colonies require a series of complicated events and circumstances to develop into the characteristically intricate structure for which they are known. The basic element in the development of coralline reef structures is a group of animals from the Anthozoa class, called stony corals, that is closely related to jellyfish and sea anemones. These small polyps (the individual animals that make up the coral reef), which are for the most part only a fraction of an inch in length, live in colonies made up of an immeasurable number of polyps clustered together. Many polys tend to retreat inside of their skeletons during hours of daylight and then stretch partially outside of their skeletons during hours of darkness to feed on minute plankton from the water around them. They build in upward and outward directions to create a fringe of living coral surrounding the skeletal remnants of once-living coral. That coralline structures are commonplace in tropical waters around the world is due to the fact that they reproduce so quickly rather than the fact that they are hardy life-forms easily able to withstand external forces of nature. 修饰语1:定语从句 Theodore Dreiser created a fictional account that laid bare the harsh reality of life in the big city and in which Dreiser established himself as the architect of a new genre. Dreiser was born in 1871 into a large family whose fortunes had in the recent past taken a dramatic turn for the worse. -ing分词表示伴随状语 After earning some money, he spend a year at Indiana University but left school and returned to Chicago, yearning for the glamour and excitement that it offered. In his work as reporter, he was witness to the seamier side of life and was responsible for recording events that befell the less fortunate in the city, the beggars, the alcoholics, the prostitutes, and the working poor. As Carrie progresses from factory worker to Broadway star by manipulating anyone in her path, Dreiser sends a clear message about the t
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