The leader should every suggestion worthy of careful consideration which is put for ward by the masses.

A．take charge of

B．attach importance to

C．take responsibility for

D．give regards to

在反应中，达到平衡后，的质量分数D％随温度、压强的变化曲线如下图所示正确的结论是（   ）。

A．正反应放热，且

B．正反应放热，且

C．正反应吸热，且

D．正反应吸热，且