阅读这篇英语短文,回答一个问题
ButtheEarthisnotstraight!Ithasanangleof23°.(哎,回归线不是23.)ThismeansthatonlypartoftheEarthgetsalotofheatfromthesun.Thisisthepartnearesttothesun.
Completetheinformation:
23°:_____
我写的是tropic.可是文中没出现.应该怎么写呢?
=..=