— _________ your model plane?
— It's in the room.
A:Who's
B:That's
C:Where's
D:Where're
根据汉语意思完成英语句子。
生活中处处有化学,下列做法从化学的角度分析,不科学的是( )
一个圆锥和一个圆柱体积和底面积都相等,圆锥的高是9cm,圆柱的高是( )