Considering that you have no _____ experience, it's doubtful that you'll get the job. [ ]

A. efficient

B. previous

C. original

D. unusual

据报道，前一段时间太湖水由于水体富营养化，导致蓝藻快速繁殖生长、死亡、腐烂，湖水位下降后，太湖底泥上泛，使水体产生异味。为改善太湖水水质，除去水中的异味，下面所提建议不合理的是[ ]

A．人工捞藻，投加活性炭

B．加入大量生石灰和明矾

C．增加水量，促进水体流动

D．严格控制各种污染源，确保达标后排放