2013年4月托福考试辅导：toefl阅读模拟试题第二套（3）
The Evolutionary Origin of Plants Paragraph 1 The evolutionary history of plants has been marked 1 a series of adaptations. The ancestors of plants were photosynthetic single-celled organisms that gave rise to plants presumably lacked true roots, stems, leaves, and complex reproductive structures such as flowers. All of these features appeared later in the evolutionary history of plants. Of today's different groups of algae, green algae are probably the most similar to ancestral plants. This supposition stems from the close phylogeneti... [ 查看全文 ]2013年4月托福考试辅导：toefl阅读模拟试题第二套（3）的相关文章
2013年4月托福考试辅导：toefl阅读模拟试题第二套（2）
The Decline of Venetian Shipping Paragraph 1 In the late thirteenth century, northern Italian cities such as Genoa, Florence, and Venice began an economic resurgence that made them into the most im...[ 查看全文 ]2013年4月托福考试辅导：toefl阅读模拟试题第二套（1）
The Surface of Mars Paragraph 1 The surface of Mars shows a wide range of geologic features, including huge volcanoes-the largest known in the solar system-and extensive impact cratering. Three ve...[ 查看全文 ]2013年4月托福考试辅导：toefl阅读模拟试题第一套（3）
Sumer and the First Cities of the Ancient Near East PARAGRAPH 1 The earliest of the city states of the ancient Near East appeared at the southern end of the Mesopotamian plain, the area between the...[ 查看全文 ]2013年4月托福考试辅导：toefl阅读模拟试题第一套（2）
Survival of Plants and Animals in Desert Conditions PARAGRAPH 1 The harsh conditions in deserts are intolerable for most plants and animals. Despite these conditions, however, many varieties of pla...[ 查看全文 ]2013年4月托福考试辅导：toefl阅读模拟试题第一套（1）
Energy and the Industrial Revolution PARAGRAPH 1 For years historians have sought to identify crucial elements in the eighteenth-century rise in industry, technology, and economic power Known as th...[ 查看全文 ]
