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In what way was the R-7 rocket an improvement over the V-2 rocket?
O A. It had far more thrust, so it could be launched higher and travel farther.
O B. It was larger and could carry multiple spacecraft at once.
O C. It was more efficient and required less fuel.
O D. It was lighter and was made of less expensive materials.
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In what way was the R-7 rocket an improvement over the V-2 rocket?
O A. It had far more thrust, so...
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