单选题 He will______resign in view of the complete failure of the research project.

A、 doubtfully
B、 adequately
C、 presumably
D、 subsequently

【正确答案】 C

【答案解析】解析：presumably ad.大概，可能，据推测(如：Jim was walking towards the baths with his costume and towel，so presumably he was going for a bath．)。doubtfully ad.怀疑地。adequately ad.充分地，适当地。subsequently ad.随后地。