During the European Renaissance (1300-1600)， artists in Florence, Italy, made striking use of oil-based paints, but the development of these paints was part of a long and c...

TF阅读真题第696篇The Northern Long-necked Turtle

The Roman Aqueduct System       Around 300 ʙ.ᴄ.ᴇ., the population of the city of Rome reached half a million and required a solution for its growing water needs...

TF阅读真题第776篇The Choreography of Merce Cunningham

The Azolla Event     During the early Eocene period, about 56 million years ago, Earth's atmosphere had high levels of carbon dioxide(CO2) which warmed the planet. But a...

Animal Migration Patterns in the Serengeti   The Serengeti, a region in northern Tanzania, is the site of the largest mammal migration on Earth. Herds of wildebeest, zebras...

Is Panspermia Possible 题目：   In 1996,NASA scientists claimed that Allan Hills 84001 (abbreviated ALH 84001),a meteorite containing materials ejected from Mars 15 million ...

Transportation and Urban Development in Los Angeles   题目：   In the early twentieth century, the key urban problem in the United States was congestion. Streetcars (pu...

TF阅读题目合集：https://shimo.im/docs/Wr3DpZZKnwi1El3J/read     第1篇Grinding Grain http://www.tuonindefu.com/?p=719 第2篇Machines and Manufacturing http://www.t...

The Porcelain Industry at Jingdezhen Porcelain is a ceramic material that is prized for its translucence, hardness, and smoothness. Porcelainwas first produced in China, perhaps ...