jiā tíng
dēng gāo
zhòng rén
fàng qì
____
在离旗杆20米处的地方用测角仪测得旗杆顶的仰角为α，如果测角仪的高度为1.5米，那么旗杆的高度为____(用含α的代数式表示)
阅读对话，判断正误，对的写“正确”错的写“错误”
Mingming: What are you doing, Lingling?
Lingling: I'm training. I'm going to do the high jump. What are you going to do for Sports Day?
Mingming: I'm going to run the 100 metres.
Michael Jordan is the greatest basketball player ________.
