Airplanes that used to take more than half a day to cross the Atlantic are now _____ to make it in s
问题描述：
| Airplanes that used to take more than half a day to cross the Atlantic are now _____ to make it in several hours. |
| [ ] |
| A. faster than B. fast enough C. so fast D. faster |
考点提示：形容词,副词
最佳答案： | B |
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