2013年4月托福考试辅导：toefl阅读模拟试题第四套（2）
The Origins of Agriculture Paragraph 1：How did it come about that farming developed independently in a number of world centers (the Southeast Asian mainland, Southwest Asia, Central America, lowland and highland South America, and equatorial Africa) at more or less the same time? Agriculture developed slowly among populations that had an extensive knowledge of plants and animals. Changing from hunting and gathering to agriculture had no immediate advantages. To start with, it forced the population to abandon the nomad's life and became ... [ 查看全文 ]2013年4月托福考试辅导：toefl阅读模拟试题第四套（2）的相关文章
2013年4月托福考试辅导：toefl阅读模拟试题第四套（1）
Geothermal Energy Paragraph 1: Earth's internal heat, fueled by radioactivity, provides the energy for plate tectonics and continental drift, mountain building, and earthquakes. It can also be ha...[ 查看全文 ]2013年4月托福考试辅导：toefl阅读模拟试题第三套（3）
Sometime after midnight on February 8,1969, a large, bright meteor entered Earth's atmosphere and broke into thousands of pieces, plummeted to the ground, and scattered over an area 50 miles long an...[ 查看全文 ]2013年4月托福考试辅导：toefl阅读模拟试题第三套（2）
Perceptions of the visible world were greatly altered by the invention of photography in the middle of the nineteenth century. In particular, and quite logically, the art of painting was forever cha...[ 查看全文 ]2013年4月托福考试辅导：toefl阅读模拟试题第三套（1）
Spartina Spartina alterniflora, known as cordgrass, is a deciduous, perennial flowering plant native to the Atlantic coast and the Gulf Coast of the United States. It is the dominant native species...[ 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）
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...[ 查看全文 ]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 ]
