大学英语分级限时阅读训练 6级PDF电子书下载

Practice 1 Solid—Fuel Rocket and Liquid—Fuel Rocket 1

练习、答案及详析 2

Practice 2 Statistics:Its Development and Use 5

练习、答案及详析 6

Practice 3 Anglo Patrons' Influence on Hispanic and American Arts 8

练习、答案及详析 9

Practice 4 How Do Americans Become Wealthy? 11

练习、答案及详析 12

Practice 5 Oil Industry in Today's Norway 15

练习、答案及详析 16

Practice 6 Cacti 19

练习、答案及详析 20

Practice 7 Erosion:How to Do with It 22

练习、答案及详析 23

Practice 8 Animals Need Protection 26

练习、答案及详析 27

Practice 9 Herodotus—A Greatest Tourist 30

练习、答案及详析 31

Practice 10 Railroad Building in the 19th US 33

练习、答案及详析 34

Practice 11 Study of Hurricane 37

练习、答案及详析 38

Practice 12 Methods of Children's Education 41

练习、答案及详析 42

Practice 13 UFO 45

练习、答案及详析 47

Practice 14 Tunnel Building in New York 49

练习、答案及详析 50

Practice 15 G.W.Carver:His Work and Career 52

练习、答案及详析 53

Practice 16 Southeasterners' Views on Universe 55

练习、答案及详析 56

Practice 17 A Portrait of Grandma Moses 58

练习、答案及详析 59

Practice 18 Two Men in Henry's Lunch-Room 61

练习、答案及详析 62

Practice 19 World's Wild Areas 65

练习、答案及详析 66

Practice 20 Construction,Savings and The Stock Exchange 68

练习、答案及详析 69

Practice 21 Tides 72

练习、答案及详析 73

Practice 22 Human Intelligence:A Glimpse Into Its Complexity 75

练习、答案及详析 76

Practice 23 Social Sciences and Scientists and How to Prepare for a Career in Social Sciences 79

练习、答案及详析 80

Practice 24 Anything Wrong with British Postal Codes? 83

练习、答案及详析 84

Practice 25 About Fashion and Designer 86

练习、答案及详析 87

Practice 26 Women in Southern European Societies in 10th and 11th Centuries 90

练习、答案及详析 91

Practice 27 Kohoutek 93

练习、答案及详析 94

Practice 28 Attitudes Towards Police 96

练习、答案及详析 97

Practice 29 How to Solve the Problems of Lack of Gravity and Sickness 99

练习、答案及详析 100

Practice 30 How Do the Members of the Clubs Look at Crimes? 102

练习、答案及详析 103

Practice 31 How Does a Child Learn? 106

练习、答案及详析 107

Practice 32 Cultivating Oysters in a New Way 110

练习、答案及详析 111

Practice 33 A New Look at Employment 113

练习、答案及详析 114

Practice 34 Abian's Daring Suggestion 117

练习、答案及详析 118

Practice 35 The Growth of the Combination Company 121

练习、答案及详析 122

Practice 36 Botany:Its Past,Today and Tomorrow 124

练习、答案及详析 125

Practice 37 Studying Birds'Brains 128

练习、答案及详析 129

Practice 38 Carr Van Anda Believed in"Hard"News 132

练习、答案及详析 133

Practice 39 With What to Last a Lifetime 136

练习、答案及详析 137

Practice 40 Accountability 140

练习、答案及详析 141

Practice 41 In the Pawnshop 144

练习、答案及详析 145

Practice 42 On the Way to the Public Library 148

练习、答案及详析 149

Practice 43 About a System of Guaranteed Subsistence 152

练习、答案及详析 153

Practice 44　Why Do Women Stage a Demonstration? 156

练习、答案及详析 157

Practice 45 Neanderthals 160

练习、答案及详析 161

Practice 46 Recycling Old Buildings for Modem Use 163

练习、答案及详析 164

Practice 47 Plankton 166

练习、答案及详析 167

Practice 48 Space Debris:Its Problem 170

练习、答案及详析 171

Practice 49 Gertrude Stein and Development of Modern Literature 173

练习、答案及详析 174

Practice 50 About Hormones 176

练习、答案及详析 177

Practice 51 Good Taste 180

练习、答案及详析 181

Practice 52 Automobile 183

练习、答案及详析 184

Practice 53 US Higher Education in Latter 1800's 187

练习、答案及详析 188

Practice 54 Formation of Rain 191

练习、答案及详析 192

Practice 55 British Columbia 194

练习、答案及详析 195

Practice 56 Some Aspects of College Education 197

练习、答案及详析 198

Practice 57 Interplay Between School and Home 201

练习、答案及详析 202

Practice 58 Beaver 205

练习、答案及详析 206

Practice 59 US's Controversial Public-Land Policy 208

练习、答案及详析 209

Practice 60 United Nations 211

练习、答案及详析 212

Practice 61 Vegetative Propagation 215

练习、答案及详析 216

Practice 62 Free Enterprise in US 219

练习、答案及详析 220

Practice 63 American Indians' Role in American Revolution and Treatment 223

练习、答案及详析 224

Practice 64 Marketing of Wheat in Canada in the Early 20th Century 226

练习、答案及详析 227

Practice 65 Lewis and Clark Discovered Animal Species 229

练习、答案及详析 229

Practice 66 Alcoholism,a Worst Drug Problem in US 232

练习、答案及详析 233

Practice 67 Some Aspects of Birth Rate 236

练习、答案及详析 237

Practice 68 How Man Found His Way to America 240

练习、答案及详析 241

Practice 69 Problems of US Higher Education 244

练习、答案及详析 245

Practice 70 Before and in My Days on Mikonos 248

练习、答案及详析 249

Practice 71 Skyscrapers 252

练习、答案及详析 253

Practice 72 Questioning Anna 256

练习、答案及详析 257

Practice 73 Emily Dickinson 260

练习、答案及详析 261

Practice 74 What Does India Want for Her Rural Areas? 264

练习、答案及详析 265

Practice 75 The Cities Are Dying 268

练习、答案及详析 269

Practice 76 Basic Research vs.Applied Research 272

练习、答案及详析 273

Practice 77 On Climate of American Society 276

练习、答案及详析 278

Practice 78 Sanders,a Life-Saver 280

练习、答案及详析 281

Practice 79 An Inescapable Condition of Settled Social Existence 283

练习、答案及详析 284

Practice 80 Two Kinds of Productiveness 287

练习、答案及详析 288