Scientists have found signs that moving water changed the chemical makeup of the surface of Mars in recent eras, therefore concluding that its crust is harboring up to three times as much water than was previously thought.
eras, therefore concluding that its crust is harboring up to three times as much water than was
eras, therefore concluding that the planet's crust harbors up to three times as much water or more as was
eras and have therefore concluded that the planet's crust harbors up to three times as much water as
eras and they have concluded, therefore, that its crust harbors up to three times as much water, or more, than
eras and concluded, therefore, that the planet's crust is harboring up to three times more water as was
所以!!做SC的时候,要确定正确答案之前一定要仔细的核对(带着句意去理解评估)
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