TF阅读真题第772篇The Development of Agriculture

Characteristics of Tropical Rain Forests Almost all the action in a rain forest (not just photosynthesis but also flowering, fruiting, predation, and herbivory) happens high in t...

    Economics begins with the assumption that human actions are rational-intended for maximum self-benefit. For example, people pay more for a larger box of the same cer...

The oldest Earth rocks known to date, found in Quebec, Canada in 2008， were determined to be about 4.3 billion years old. However, the oldest known materials of the solar system-M...

There is a much greater similarity between the flowering plant floras of different continents—South America, Africa, Asia, and Australia—than between the mammalian faunas  (anim...

  Personality Traits Trait theory is a major approach to the study of human personality. Trait psychologists are interested in measuring personality traits, which are endurin...

TF阅读真题第722篇Easter Island's Statues

Silver and silver objects had multiple meanings in late-eighteenth-century North America. Insights about social attitudes and the buying habits of consumers come partly from the re...

  The seventeenth century was a golden age for Dutch painting, with artists producing genre paintings (depictions of scenes from everyday life), still lifes of fruit or flower...

Jupiter, the fifth planet from the Sun and the largest in the solar system, is orbited by 69 moons, including lo, Europa, Ganymede, and Callisto. Europa, which is of the same size ...