题干
听短文, 选择正确选项完成表格, 短文读两遍。
Information about a trip | |
Where to go | ⑴ |
How to get there | ⑵ |
How far | ⑶ |
What to visit after lunch | ⑷ |
When to come back | ⑸ |
展开式中各项二项式系数之和为
，
展开式中各项系数之和为
，则
=" " （ ）
