Unit 1 Basic Circuit and Its Applications INTENSIVE READING 1.1 Basic Circuit Concepts 1.2 Capacitance and Inductance WRITING Resume INTENSIVE READING 1.3 Voltage Dividers 1.4 Filters CAREER SPEAKING Job Interview EXTENSIVE READlNG Passage 1 Ohm’S law Passage 2 What Is Electricity TRANSLATIoN Features of Scientific English UNIQUE ENGLISH Brain Teaser Unit 2 0ptics INTENSIVE READING 2.1 Nature of Light 2.2 Reflection and Refraction WRITING Letter of Thanks INTENSIVE READING 2.3 Numerical Aperture(NA) 2.4 Electromagnetic Radiation CAREER SPEAKING Meeting Guests EXTENSIVE READING Passage 1 What Is Light Passage 2 Convex Lens TRANSLATIoN Translation of Words and Phrases UNIQUE ENGLISH Incredible Sentences Unit 3 1.aser INTENSIVE READING 3.1 This Is Laser 3.2 Applications of Laser WRITING Letter of CongratuIation INTENSIVE READING 3.3 Laser Construction 3.4 Popular Misconceptions aboutlaser CAREER SPEAKING Introducing Enterprises EXTENSIVE READING Passage 1 A Prospectus about LaserMachines Passage 2 Surgery Using Lasers TRANSLATIoN Translation of Noun Clauses UNIQUE ENGLISH Funny Chinglish Unit 4 0ptical Detection INTENSIVE READING 4.1 Photoelectric Effect 4.2 Photodiode WRITING Letter of Apology NTENSIVE READING Unit 5 Fiber-optic Communication Unit 6 Laser Processing Glossary References