She devoted herself _____ to her research and it earned her a good reputation (名声) in her field. [ ]

A. strongly

B. extremely

C. entirely

D. freely

渠道土方施工中，下列说法正确的是（）。

A、内、外边坡上方加宽超填值不宜少于50cm

B、碾压遍数不少于10遍

C、对个别机械无法夯实的地方进行人工夯实或蛙式打夯机夯实，加宽值不少于50cm

D、对防渗要求为双防的半填挖渠道，对土质的要求一定是黏土