____
经线
纬线
纬线圈都是圆(除极点外)
经线的长度相等
纬线指示东西方向
Steve's activity on Sunday
In the past
He spent most of the time 1.
He learnt it from his 2 and he is good at it.
Now
He spends at least 3 hours collecting rubbish.
He would like to protect the beach.
I _____ the book Little Woman, but I'll let you read it first.
求: