《当代科技英语教程》

Unit One1

Test A Age and Creativity1

Test B Jack-of-age-trades and Renaissance Man4

Test C A Teen-age Science Contest5

Unit Two7

Test A Ia Your Child in Good Health?7

Test B Dyslexia9

Test C Lead Level in the Blood10

Test A Ekectronic Pictures for Tesching Medicine12

Unir Three12

Test B Growth Factors14

Test C A New Device for Transplanting Organs16

Uint Four18

Test A Shyness18

Test B How to Train the Blind20

Test C Keeping Pets21

Unit Five23

Test A A Report on the World's Wild Aress23

Test B The Study of Oceans25

Test C National Hurricane Center27

Unit Six28

Test A Visit to Planer Mars28

Test B Environmntal Problems30

Test C The Destruction of Ozone31

Unit Seven34

Test A Temperatures in 199034

Test BHow the Gulf War Affects the Environment36

Test C Plastic Wastes37

Test A Saving Wild Animals with Advanced Techniques40

Unit Eight40

TestB The Frogs and Toads Mystery42

Test C The Fate of Some Rare Animals44

Unit Nine46

Test A The Mobile Staellite Communication System46

Test B A Rader System for Observing Space Junk48

Test C Teleoperators50

Test B A Good Why to Store Cement50

Unit Ten52

Test A Aquarus -An Underwater Reseach Center52

Test B The Jaipur Foot54

Test C The First Patent Animal55

Test A Heat Recovery Systems58

Unit Eleven58

Test C Computer Programs for Population Planning61

Unit Twelve64

Test A Solar-powered Water Pumps64

Test B Wind-resistand Blockhouses66

Unit Thirteem70

Test A No-till Faiming70

Test B A New way to Proauce Gotion Fibers72

Test C Alternative Agriculture System72

Test A Prodcing Electricity from Cattle Wastes75

Test B How to Build aSimple Incubator77

Test C How to Increace the Production of Male Catfish79

Unit Fifteen81

Test A The Effects of Restricled Eating81

Test B Why Left-handed people Are More Vulnerable to Accidents83

Test C Breat-fedd Your Baby84

Unit Sisteen86

Test A The New Electric Car86

Test B Fractogenometry88

Test C Disputing the Theory ofZFY Gene90

Unit Seventeen92

Test A Where X-ray Radiation in the Sky Comes from92

Test B The Study of Tree Rings94

Test C TheVillage Telephone System97

Test C Watching Migratong Birds with Wearther Radar100

Unit Nineteen103

Test A Urban Archaeobogy103

Test B A Threat to Ancient Treasures105

Test C The Oldest Floe\wer Ever Found106

Unit Twenty108

Test A Compact Disks108

Test B Compton's Multimedia Encyclopacdia110

Test C What New Computers Can Show You112

AppendixⅠ:Key to Exercises (Units 1-20)114

Appendix Ⅱ:Chinese Translstion of Tests A(Units1-20)117

Unit Fourteen785