一、 醇的结构、分类和命名 1.结构 醇可以看成是烃分子中的氢原子被羟基（OH）取代后生成的衍生物（R-OH）

Direction: You will hear the dates of birth and the dates of death of ten world famous composers. Listen carefully. Fill in the blanks with the dates you hear. Write as rapidly as you can. You may use short forms for the months

Unit 10 For Peace and Development Section A Words and Phrases Direction: Listen to some statements about China's economic development. Fill in the blanks with numbers

Creative Minds The following passage will tell you about some inventions made by people in different countries. Listen carefully and match the inventions with the places where these things first came from. Inventions Places

Words and Phrases Section A: Here are some announcements broadcast at some airports. Listen carefully to each announcement and pay special attention to flight numbers, departure times and boarding gate numbers. Write down in the correct space. Airlines Destination Flight No. Departure Boarding Time Gate

You are going to hear some sentences telling you the 12 most populous countries in the world. Listen carefully and supply the missing information. Pay special attention to the numbers

Section A Words & Phrases Here are some statements of some superlative world geographical statistics. Listen carefully and complete the following chart. Pay special attention to the numbers Geographical feature Location Size

Part I Warming Up A Words and Phrases You are going to hear some important dates in email history. Supply the missing dates and words Great Dates in Email History Date: ________________________ Leonard Kleinrock, a UCLA computer science professor, sends the ___________________to a colleague

天水师范学院精品课程：《植物分类学》PPT教学课件：木犀科( Oleaceae)

天水师范学院精品课程：《植物分类学》PPT教学课件：茜草科(Rubiaceae)