A rocket must reach a speed of 28, 440 km/h the pull of the earth. [ ] A.escapeB
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![A rocket must reach a speed of 28, 440 km/h the pull of the earth. [ ] A.escapeB](/pic/43_949806.jpg)
A rocket must reach a speed of 28, 440 km/h ________ the pull of the earth.
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A.escapeB.escapingC.escapedD.to escape试题答案
答案:D