填空题
{{B}}Part A{{/B}}
{{I}} For questions 1-5, you will hear a passage. Listen and answer the questions with the information you' ve heard. Write {{B}}not more than 3 words{{/B}} in each blank. You will hear the recording twice. You now have 25 seconds to read the questions below. {{/I}}

填空题 ______ make it possible for astronauts to reach the moon.

填空题 Rockets were first used in war in ______ .

填空题 ______ discovered liquid fuel as a fuel for rockets.

填空题 The first liquid-fuelled rocket can fly ______ .

填空题 The passage is mainly about ______ .