人类与现代科学PDF电子书下载

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CONTENTS 2

1．Sending Messages and Pictures by Satellite 2

2．Our Weather 15

3．Scientists in Antarctica 27

4．Hooland's Battles Against Water 43

5．Living under the Sea 56

6．The World's First Completely Automatic Rail-way 72

7．Communications 86

8．The Computer and Society 99

VOCABULARY 131

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