人教版高中英語必修2教案Unit 3 Computer

technology   n.   1. the practical application of science to commerce or industry 2. the discipline dealing with the art or science of applying scientific knowledge to practical problems universal   n.   coupling that connects two rotating shafts allowing freedom of movement in all directions: in motor vehicles a universal joint allows the drive shaft to move up and down as the vehicle passes over bumps.) adj.   of worldwide scope or applicability: universal experience. mathematical   adj.   1. statistically possible though highly improbable: have a mathematical chance of making the playoffs. 2. beyond question: a mathematical certainty. 3. of or pertaining to or of the nature of mathematics: a mathematical textbook. 4. characterized by the exactness or precision of mathematics: mathematical precision. 5. relating to or having ability to think in or work with numbers: a mathematical whiz. artificial   adj.   1. contrived by art rather than nature: artificial flowers. 2. not arising from natural growth or characterized by vital processes 3. artificially formal: her husband hated the artificial humility . disagree   v.   1. be different from one another 2. be of different opinions: she disagrees with her husband on many questions. disadvantage   n.   the quality of having an inferior or less favorable position  v.   put at a disadvantage; hinder, harm: this rule clearly disadvantages me. choice   n.   1. the act of choosing or selecting: your choice of colors was unfortunate.) 2. one of a number of things from which only one can be chosen: my only choice is to refuse.   adj.   1. of superior grade: choice wines. 2. appealing to refined taste: choice wine. material   n.   1. things needed for doing or making something: writing materials. 2. information (data or ideas or observations) that can be used or reworked into a finished form: the archives provided rich material for a definitive biography.) 3. a person judged suitable for admission or employment: he was university material. 4. the tangible substance that goes into the makeup of a physical object: coal is a hard black material. 5. artifact made by weaving or felting or knitting or crocheting natural or synthetic fibers: she measured off enough material for a dress.   adj.   1. directly relevant to a matter especially a law case: his support made a material difference. 2. concerned with or affecting physical as distinct from intellectual or psychological well-being: material needs. 3. concerned with worldly rather than spiritual interests: material possessions. 4. derived from or composed of matter: the material universe. 5. having substance or capable of being treated as fact; not imaginary