问题
选择题
| The gravity on the earth is much ______ that on the moon, do you know why? |
A. as strong as B. strong than C. so strong than D. stronger than |
答案
答案：D
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| The gravity on the earth is much ______ that on the moon, do you know why? |
A. as strong as B. strong than C. so strong than D. stronger than |
答案：D