题干
Because of the heavy snow, we had to delay the visit until this weekend to the artgallery ____ in the center of our city these days.
A：being held
B：holding
C：to be held
D：held
答案(点此获取答案解析）
A
个公民都为低碳环保尽自己的一份力。从哲学角度看，公民应该 （ ）
①树立生态价值观。积极参与节约资源和保护环境的活动