Being famous might sound rather admirable, but, ___________, it almost drives some stars crazy, with their privacy exposed to the public.

A．on the contrary

B．what’s worse

C．as a result

D．in a word

环境问题的实质是由于人类活动超出了环境的承受能力，对其所赖以生存的自然生态系统的结构和功能产生了破坏作用，导致人与其生存环境的不协调。环境问题其实就是（）.

A.污染问题

B.水污染问题

C.大气问题

D.发展问题