In addition to the 'pure vowels' (ones where the tongue positioning is fairly static) shown above there is also the set of vowel diphthongs. These are effectively long vowels during which the tongue moves to produce a definite change of quality during the sound. In phonetic transcription we usually use a pair of linked symbols for each diphthong - one indicating the quality of the sound at the start of the vowel, and the other indicating its quality as it ends. Examples of diphthongs are found in words like 'boy', 'hear', 'may', 'my

Nuclear power 1 Nuclear power can come from the fission of uranium plutonium or thorium or the fusion of hydrogen into helium. Today it is almost all uranium. The fission of an atom of uranium produces 10 million times the energy produced by the combustion of an atom of carbon from coal. By 1993, there'd been 109 licensed

This unit is intended to present students the possibilities in the 21st century. After learning it the students should be able to obtain an insight into our life as well as our lifestyles get a good understanding of the trends for the 21st century

Teaching Objectives: a. to help students to form a picture of Britain when it was under the bombs from German armies during World War II b. to direct students to write a composition with the structure of a general statement supported by specific details c. to guide students to do some oral practice through doing the interview and picture description and the routine pair work as well

Environmental Protection Throughout the world Teaching Objectives: This unit is intended to promote the students awareness of environmental protection. Afte learning it, SS should be able to have a general idea of the environmental conditions in the countries and regions discussed In the text have a basic knowledge of measures taken by the governments to protect the environment

Section A: Learning a Foreign Language(4 hours) Section B: Keys to Successful Online learning (2 hours) The texts are used as inputs (for output), stimuli (for response), prompts(for thinking) Teaching Objectives: This unit is intended to introduce you to studying by computer. After learning it, Ss should be able to

It is well known that advances in scientific medicine have occasionally threatened to displace the history and physical examination in the evaluation of the patient. However, we usually discover that technologic advances serve to make the physical examination more rational and provide new understanding or objective documentation of long- appreciated physical finding

Definition Cyanosis refers to bluish(带蓝色的 带青色的) color of the skin and mucous membranes resulting from an increased quantity of reduced hemoglobin(亚铁血 红蛋白;还原血红蛋白),orof hemoglobin derivatives, in the small blood vessels of those areas. It is usually most marked in the lips, nail beds(甲床),ears, and malar (颧骨的;颊的) eminences

Questions for Thoughts 1. It is said if you' re tired of London, you're tired of life. Do you think so? Why or why not? 2. What do you think of the weather in great Britain? Do you think that the uncertainty of the weather really has a definite effect upon the Englishmans

The length of a sound is the length of time during which it is held on continuously in a given word or phrase. The principal facts concerning length in English are given in the following rules: 203. Length of vowels 1. English vowels /i:/, /a: / /:/, /u:/, /a: /are longer than the other English vowels in similar context, i.e., when surrounded by the same sounds, and pronounced with the same degree of stress. Thus