Giviog 22.up maker to go back to full time caudation was s a big________, but now I know was the best decision I ever made.

A．project

B．commitment

C．competition

D．ambition

用N_A表示阿伏加德罗常数的值，下列说法不正确的是（　　）

A．1molCl₂与足量Fe反应，转移的电子数为3N_A

B．1.5molNO₂与足量H₂O反应，转移的电子数为N_A

C．常温常压下，46g的NO₂和N₂O₄混合气体含有的原子数为3N_A

D．N_A个O₂和N_A个H₂的质量比为16：1