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  3. The scientist and agricultural innovator George Washington Carver aided the economy of the South by developing hundreds of comme

The scientist and agricultural innovator George Washington Carver aided the economy of the South by developing hundreds of comme

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问题 The scientist and agricultural innovator George Washington Carver aided the economy of the South by developing hundreds of commercial uses for crops such as the peanut.
选项 A、restored
B、stabilized
C、helped
D、changed
答案C
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