Unit One 1
Text:In the Antarctic 1
Section 1 Aids to Study 1
Contents 1
Section 2 Suggested Answers and Keys to the General Exercises 4
Section 3 Reading Exercises 8
Section 4 Writing Exercises 9
课文参考译文 13
Unit Two 15
Text:The'Killer Lake'of Cameroon 15
Section 1 Aids to Study 15
Section 2 Suggested Answers and Keys to the General Exercises 17
Section 3 Reading Exercises 23
Section 4 Writing Exercises 24
课文参考译文 29
Text:The Unsinkable Titanic 33
Section 1 Aids to Study 33
Unit Three 33
Section 2 Suggested Answers and Keys to the General Exercises 41
Section 3 Reading Exercises 46
Section 4 Writing Exercises 47
课文参考译文 51
Unit Four 61
Text:Who Am I？ 61
Section 1 Aids to Study 61
Section 2 Suggested Answers and Keys to the General Exercises 65
Section 3 Reading Exercises 69
Section 4 Writing Exercises 69
课文参考译文 72
Unit Five 83
Text:Challenger:Reflections on a Tragedy 83
Section 1 Aids to Study 83
Section 2 Suggested Answers and Keys to the General Exercises 85
Section 3 Reading Exercises 91
Section 4 Writing Exercises 91
课文参考译文 97
Unit Six 106
Text:The World House 106
Section 1 Aids to Study 106
Section 2 Suggested Answers andKeys to the General Exercises 118
Section 3 Reading Exercises 122
Section 4 Writing Exercises 122
课文参考译文 125
Section 1 Aids to Study 131
Text:Intelligence,The University And Society 131
UnitSeven 131
Section 2 Suggested Answers and Keys to the General Exercises 134
Section 3 Reading Exercises 139
Section 4 Writing Exercises 139
课文参考译文 143
Unit Eight 155
Text:On Aging 155
Section 1 Aids to Study 155
Section 2 Suggested Answers and Keys to the General Exercises 159
Section 3 Reading Exercises 165
Section 4 Writing Exercises 165
课文参考译文 169
Unit Nine 176
Text:AIDS:The Fear Spreads 176
Section 1 Aids to Study 176
Section 2 Suggested Answers and Keys to the General Exercises 182
Section 3 Reading Exercises 189
Section 4 Writing Exercises 190
课文参考译文 194
Unit Ten 201
Text:Science and Technology in Developing Countries 201
Section 1 Aids to Study 201
Section 2 Suggested Answers and Keys to the General Exercises 203
Section 3 Reading Exercises 211
Section 4 Writing Exercises 212
课文参考译文 217