单项选择题
A．by staring at them B．by applying electricity to the fish bowl C．by reducing the amount of electricity applied to the fish bowl D．by ordering them to stop
A．special effects often cost a lot B．actors destroy many things C．many actors are harmed or killed in film making D．special-effects people earn high salaries
A．she reduces the costs of movie making B．she makes scenes look real C．she makes destroyed things reusable D．she protects their work from being destroyed