itinerary
2009-02-23 19:11
- 相關(guān)熱點(diǎn)：
- 初級(jí)劍橋商務(wù)英語(yǔ)
短文：科學(xué)理論
科學(xué)理論Scientific Theories In science, a theory is a reasonable explanation of observed events that are related. A theory often involves an imaginary model that helps scientists picture...
晨讀美文055
晨讀美文It is commonly believed that only rich middle-aged businessmen suffer from stress. In fact anyone may become ill as a result of stress if they experience a lot of worry over a long peri...
amenities
vegetarian
