阿巴拉契亚山道PDF电子书下载

Famous Places 6

Reading Objectives 6

The Pyramids 9

The Great Wall of China 11

The Colosseum 13

The Taj Mahal 15

The Empire State Building 17

The Sydney Opera House 19

Time by the Clock 22

Reading Objectives 22

lt's About Time 23

Sundials 24

Water Clocks 26

Mechanical Clocks 28

Pendulum Clocks 30

Clocks Today 32

Comparing Clocks 34

Appalachian Trail 36

Reading Objectives 36

Let's Go on a Hike 37

A Dream Comes True 40

Packing for the Trip 42

The Journey Begins 44

Rocky Peaks 50

Nearing the End 53

Alaska 58

Reading Objectives 58

Welcome to Alaska 59

Alaska's Weather 61

People of Alaska 64

Alaska:A Big Adventure 70

Review Activities 74

Think and Discuss 74

Multiple-Choice Test 76

Index 80