植物体的所有细胞中都有叶绿体.
八年级(3)班值日生小雨和小萌为了去看自己偶像的演唱会,没有打扫教室就走了。对于她们的行为,你认为( )
There are fewer and fewer tigers in India. The situation will continue ______ humans stop hunting them for their fur and bones.
我国人口的突出特点是( )