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THE UNKNOWN SOUTHERN LAND The unknown southern land was an imaginary continent, appearing on European maps from the fifteenth to the eighteenth century. It was first put there by a Greek map maker in the first century AD. He believed that south of t
人教全日制普通高中英语（必修）高三(全一册)
The study of natural history is not something to be left to biologists. In fact, their capacity in terms of the time they can spend away from their offices is very limited. Even if all professors in universities and research institutes could devote a
人教全日制普通高中英语（必修）高三(全一册)
Whether we feel rewarded and content in a job depends on several different aspects. The psychologist Frederick Herzberg believed that these could be divided into two groups. In his Theory of Motivation, Herzberg called these groups the Hygiene Factor
人教全日制普通高中英语（必修）高三(全一册)
Like all other living creatures, human beings belong to a group of other animals that share certain characteristics. Zoologists place us in a group called primates, which include other mammals such as apes and monkeys. Among the key features found in
人教全日制普通高中英语（必修）高三(全一册)
Many language learners think that the best way to learn a language is to spend time in a country where the language is spoken. In the past, studying abroad was a distant dream for most people. Nowadays, however, it has become easier to find both oppo
人教全日制普通高中英语（必修）高三(全一册)
Students in your class are different from one another in many ways. You all have different personalities, abilities and physical appearance. In other aspects you have a lot in common. Certainly you are the same age and same nationality, and you proba
人教全日制普通高中英语（必修）高三(全一册)
A In 1986, the Chinese government introduced a law stating that by the year 2000 every Chinese child would have nine years of compulsory education. Although there were several problems in reaching this target, the outcome was highly successful. It is
人教全日制普通高中英语（必修）高三(全一册)