. Match them up

 

Task One is designed to check your overall comprehension of the text "Longitude". Please mark the paragraphs in Part 1 and 2 of the text 'Longitude' with Arabic numbers, and then match the paragraphs with the main ideas accordingly. Put the corresponding sentence number on the short line after each group of paragraphs. Then press "Check". You can also "See the answer" directly.
 
Para. 1-5
1 An introduction to Harrison and his preparatory steps to solve the problem
Para. 6-7
2 The four stages towards the perfect clock
Para. 8-10
3 A shipwreck in history and its reason
Para. 11
4 How longitude helps to locate one's position at sea
Para. 12-19
5 The significance of solving the problem with H4
Para. 20-28
6 The establishment of the Board of Longitude
Para. 29-31
7 The difficulty of determining longitude

T1P26-29 & 32-33
 
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