题文
Things are ____ on the moon ____ on the earth .
| A．much lighter ; than | B．much heavier ; than |
| C．as heavy ; as | D．not so light ; as |
Things are ____ on the moon ____ on the earth .
| A．much lighter ; than | B．much heavier ; than |
| C．as heavy ; as | D．not so light ; as |
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