牙尖交错是指() A.下颌位置在正中 B.每颗牙都对应对颌两颗牙 C.上下牙列的中线 发布时间:2017-06-08 16:39 │ 来源:www.tikuol.com 题型:单项选择题 问题: 牙尖交错是指()A.下颌位置在正中B.每颗牙都对应对颌两颗牙C.上下牙列的中线对正D.形成最广泛的E.以上都不是
题型:单项选择题 用所给动词的适当形式填空小题1:We will visit the farm if it ____________ (not rain) tomorrow。小题2:Gravity is a force that stops us from____________ (float) in the air.小题3:Our home town ___________(change) a lot over the years.小题4:The train _______________( leave) already when we arrived.小题5:I _________________( do) my homework when the light went out yesterday. 查看答案