Questions 1-4Reading Passage 1 has six paragraphs A-F.Choose the most suitable

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问题 Questions 1-4
Reading Passage 1 has six paragraphs A-F.
Choose the most suitable headings for paragraphs B-E from the list of headings below.
Write the appropriate numbersⅠ--Ⅸ in boxes 1-4 on your answer sheet.
      List of Headings
Ⅰ  How the reaction principle works
Ⅱ  The impact of the reaction principle
Ⅲ  Writers’ theories of the reaction principle
Ⅳ  Undeveloped for centuries
Ⅴ  The first rockets
Ⅵ  The first use of steam
Ⅶ  Rockets for military use
Ⅷ  Developments of fire
Ⅸ  What’s next?
[br] Questions 11-14
Look at the drawings of different projectiles below, A-H, and the names of types of projectiles given in the passage, Questions 11-14. Match each name with one drawing.
Write the appropriate letters A-H in boxes 11-14 on your answer sheet.


选项

答案 B

解析
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