如果一个物种的所有个体都从地球上消失了,那么这个物种就已经(

如果一个物种的所有个体都从地球上消失了,那么这个物种就已经(  )

  A. 灭绝 B. 濒危 C. 再生 D. 受到威胁

答案

A

相关题目

In order to change attitudes _______ employing women, the government is bringing
In order to change attitudes _______ employing women, the government is bringing in new laws. A. about                     B. of        C. towards             
(16分)根据材料及所学知识,回答下列问题:材料一“春愁
(16分)根据材料及所学知识,回答下列问题:材料一“春愁难遣强看山,往事惊心泪欲潸。四百万人同一哭,去年今日割台湾。”——---丘逢
 It was in the garden of his old house _______ he grew up _______ he dug up a
 It was in the garden of his old house _______ he grew up _______ he dug up a pot of gold.   A. that; that     B. where; that       C. where; where            D. that; where
(18分)   (1)(9分)图13是一辆连有纸带的小车做匀变速
(18分)   (1)(9分)图13是一辆连有纸带的小车做匀变速直线运动时,打点计时器所打出的纸带的一部分。已知打点频率为50Hz,则打相邻两点的时
如图,在四棱锥中,底面为正方形,且平面,,、分别是、
如图,在四棱锥中,底面为正方形,且平面,,、分别是、的中点. (Ⅰ)证明:EF∥平面PCD; (Ⅱ)求二面角B-CE-F的大小.
2009年2月5日,CCTV感动中国2008年度人物评选揭晓,特别奖授予
2009年2月5日,CCTV感动中国2008年度人物评选揭晓,特别奖授予了全体“中国人”。组委会认为,2008年的中国经历了太多悲怆和喜悦,在抗击暴风雪、抗
    Twenty-five years ago, as a parent educator, I began reading about the d
    Twenty-five years ago, as a parent educator, I began reading about the dangers of praise. I was completely shocked by what I was learning: praise is not good for kids. How could that be? So I
如图所示,平行金属板中带电质点P原处于静止状态,不考虑
如图所示,平行金属板中带电质点P原处于静止状态,不考虑电流表和电压表对电路的影响,当滑动变阻器R4的滑片向b端移动时,则:A.电压表读数减小

最新题目