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 harnessed to drive electric generators and heat homes. Geothermal energy becomes available in a practical form when underground heat is transferred by water that is heated as it passes through a subsurface region of hot rocks (a heat reservoir) that may be hundreds or thousands of feet deep. The water is usually naturally occurring groundwater t... [ 查看全文 ]2013年4月托福考试辅导：toefl阅读模拟试题第四套（1）的相关文章
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 ]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 ]
