You will hear a recording. Type the missing words in each blank.
你将听到一段录音。请在每个空格里打出缺失的单词。
0:07
For many years, most vehicles in the U.S. were gas , relying on fossil fuels for energy. These cars contributed to air pollution and climate change. The to find cleaner alternatives led to new innovations in the automotive industry. Engineers began designing electric cars that were both fast and stylish. They also developed cars, which use a renewable energy source to reduce emissions. These advancements are helping create a more sustainable future.
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