请说出两种野外辨别方向的简单方法。
(1)利用指南针定向;(2)利用北极星定向。
纬度地带性在中纬度地带表现更为明显,经度地带性在低纬度和高纬度地带表现比较明显。
如图是两个可以自由转动的转盘,每个转盘被分成两个扇形,同时转动两个转盘,转盘停止后,指针所指区域内的数字之和为4的概率是( )
(____)He wants to play baseball.
(____)Tim was so happy because he got a gift.
(____)Why are you wearing a Tshirt?
(____)I am going to the cinema tomorrow.
(____)It's difficult to fly a kite.