A:was taken
B:took
C:was taking
D:is taken
下图表示高等动物卵子的发生过程,相关叙述不正确的是
---We have booked a room for today and tomorrow.
---________, sir.
Na2O2(s)+CO2(g)═Na2CO3(s)+12O2(g)△H=﹣226kJ/mol
根据以上热化学方程式判断,下列说法正确的是( )