Things are ________ on Mars ________ on Earth because of the different gravity.
| A．muchlighter;thanthat | B．muchlighter;thanthose |
| C．notsolight;asthat | D．notsolight;asthose |
Things are ________ on Mars ________ on Earth because of the different gravity.
| A．muchlighter;thanthat | B．muchlighter;thanthose |
| C．notsolight;asthat | D．notsolight;asthose |
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