Nearly two tons of nuclear-reactor fuel have already been put into orbit around the Earth, and the chances of a collision involving such material increase greatly as the amount of both space debris and satellites continue to rise.
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Aas the amount of both space debris and satellites continue to rise
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Bas the rise continues in both the amount of satellites and space debris
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Cas the amount of space debris and the number of satellites continue to rise
分析该选项
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Dwith the continually increasing amount of space debris and the number of satellites
分析该选项
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Ewith the amount of space debris continuing to increase along with the number of satellites
分析该选项