A:温度计
B:托盘天平
C:容量瓶
D:滴定管
— Have you seen the film called The trouble with Teenagers?
—Yes, but I don't think it is worth _______.
如果某一种昆虫,缺乏适应变化着的环境所需要的变异,它可能( )
俄罗斯地处高纬度地区,气候冬季____夏季____。