一列车正由北向南在雨中行驶，坐在窗口的乘客看到雨滴正好竖直向下落到地面上，这一现象说明刮的是__________风。
北
句型转换。（5分）
小题1:Whose guitar is this? (改为同义句)
_________ _________ the guitar belong to?
小题2:Jack used to be an outgoing pianist. ( 改为一般疑问句)
_________ Jack _________ to be an outgoing pianist?
小题3:Jennifer is worried because of her poor English. (对划线部分提问)
_________ __________ Jennifer worried?
小题4:Your brother has never heard of the story, __________ ____________? (完成反意疑问句)
小题5:I think parents should be strict with teenagers. ( 改为否定句)
I_______ ________ parents should be strict with teenagers.
健康行为有哪些基本特征
