目录 JANUARY Air Conditioner Adrenaline Aerosol Braille Boyle's Law Barometer Aluminum Manufacture Bacteria are Single Cells Calculus Band-aid Chocolate Chip Cookies Coca-Cola Diaper Electric Chair Electromagnet Device Elevator Electric Iron Electric Cars Fuel Cell Green Plastic Garbage Bag Phonograph Glass Globe Hallmark Cards Laptop Liquid Crystal Display Match Stick Electron Microscope Motorcycle Printing Press Pendulum Clock FEBRUARY Air Brakes Polaroid Camera Paper Clip Paper Puncher Piano Polio Vaccine Positron Penicillin Richter Scale Rocket Rollfilm Rubber Band Refrigeration Radar Steam Engine Scotch tape Sewing Machine Syringe Needle Supercomputer Toothbrushes Television Telegraph Transistor Toilet Paper Telescope Three-way Traffic Signal Superglue Toothpaste MARCH APRIL MAY JUNE JULY AUGUST SEPTEMBER OCTOBER NOVEMBER DECEMBER
以下为对购买帮助不大的评价