1. to know current situation and the future in the telecommunication world Teaching 2. to understand the main idea and organization of the text

1. to know the three basic processes of PCM: Sampling Quantizing Encoding Teaching 2. to understand that PCM is the heart of technology in communications in Objectives

1. to know the origin and development of Internet Teaching 2. to understand the main idea and organization of the text

1. to know the operation and advances of WDM and optical network Teaching 2. to understand the main idea and organization of the text; Objectives 3.to master some important new words, phrases and their

1.to know the development of switching techniques Teaching 2.to understand the main ideas of the text Objectives 3.to master the useful sentence structures, words and expressions used in the relevant exercises

Unit 8 Section A Legal and moral Implications of Cloning Warm-up Questions 1. What do you know about cloning and genetic engineering? 2. Do you want to cloning yourself once human cloning becomes reality?

1 RSA In 1977, Ronald Rivest, Adi Shamir, and Leonard Adleman proposed a highly secure cryp- tosystem(called RSa)based on number theory. Despite decades of attack, no significant weakness has been found (Well, none that you and me would know.)Moreover, RSA has a major advantage over traditional codes: the sender and receiver of an encrypted

You have isolated cells from an alien organism called Sacul Sinned ed. You want to know if these cells contain proteins that are similar to the cyclins found in eukaryotic cells. To this end, you

1. Besides the ways introduced in para1, what other traditional ways do you know the Chinese have to predict earthquakes Water in the well becomes muddy, Seismoscope/Seismograph invented by Zhang Heng Mice run in the street fearlessly 2. What is the most dangerous part in the earthquake to most people? Falling building

Lead-in Questions 1. Are you iron deficient 2. How would you know? a. tired b. have reduced ability to exercise. C. have poor stamina d. get frequent infections e. are lethargic