【单选题】The cost of this building _________to be over a million.
【单选题】The teaching building of our school_____ for many times.
【单选题】According to the passage, highway building______.
D.
has been taxed at a lower rate
【简答题】The building has twelve floors. __________ twelve floors in the building.
【单选题】气孔特异、内陷,保卫细胞侧面观呈哑铃形或电话听筒形的药材是
【判断题】植物细胞减数分裂时同源染色体的配对发生在中期 I。
【单选题】减数分裂中同源染色体的配对,发在减数分裂 I 的( )。