问题
单项选择题
在100米长的路段中种树,请问至少要种多少棵树才能保证至少有2棵树之间的距离小于10米
A.10
B.11
C.12
D.13
答案
参考答案:C
解析: 如果两棵树之间的距离不小于10米,那么最多可以种100÷10+1=11棵树。因此,只要大于11棵树,即至少种12棵树,可以保证2棵树之问的距离小于10米。
在100米长的路段中种树,请问至少要种多少棵树才能保证至少有2棵树之间的距离小于10米
A.10
B.11
C.12
D.13
参考答案:C
解析: 如果两棵树之间的距离不小于10米,那么最多可以种100÷10+1=11棵树。因此,只要大于11棵树,即至少种12棵树,可以保证2棵树之问的距离小于10米。
补全对话。 | |
A: 1______ can you tell me the time, please? B: Sure, it's eight thirty-eight. A: The buses are getting late these days. B: I hope it won't be too late today. I must get back to school before 9 o'clock. A: I hope you 2______. Where are you from? B: I'm from Shanghai. I'm studying here. A: 3______ B: History. A: My goodness! That sounds difficult. 4______ B: Six months. A: Ah. Here's the bus. Well, have a good day and 5______. B: Thanks.
|