---Fans nowadays seem to be interested in the entertainment news___________the private lives of pop stars.

---That’s it. I can’t agree more.

A．concerning

B．concerned

C．involved by

D．being involved in

使用过氧乙酸等消毒液时，重点注意（）。

A.浓度比随意搭配

B.防火、防腐、防爆

C.不用防护用品