CONTENTS 1
Unit One 1
1．Garage Sale 1
2．The American Visitor 7
3．Ruthless 13
The Mystery 16
18．A Young Detective's Adventures: 16
4．Don't Wait to Give Daddy a Hug 18
Unit Two 18
5．Better Known as Mark Twain 25
6．The Boat of Noah 34
Unit Three 41
7．I Never Forget a Face 41
8．The Young Painter in the World 47
9．Picasso and His Pictures 53
Unit Four 57
10．Richard Nixon's Childhood 57
11．The Importance of Just Being There 67
12．Where Do Dreams Come from? 74
Unit Five 80
13．After Twenty Years 80
14．The Bermuda Triangle 88
15．Washington,D.C 96
16．A Young Detective's Adventures:The Deaths of the Three Mrs.Fitches 103
Unit Six 103
17．A Young Detective's Adventures:Looking for Clues 109
Unit Seven 122
19．Sam and His Store 122
20．Today's Dropouts 129
21．One Million Dollars 134
Unit Eight 142
22．First Teacher in Outer Space 142
23．The Honor Code 148
24．A Double-Dyed Deceiver 157
25．Port Royal 163
Unit Nine 163
26．Creative Justice 170
27．The Midnight Visitor 177
Unit Ten 184
28．"Dad,Why Did You Do It?" 184
29．The First Thanksgiving 190
30．Here They Come 200
Key to Summaries 210
Appendix Ⅰ(结构与语法） 230
Appendix Ⅱ（词汇表） 232
Appendix Ⅲ（词组表） 255