Nothing but some ancient Chinese coins in the sunken ship since they began the exploration.
A. were found
B. was found
C. have been found
D. has been found
网友回答
A. were found
B. was found
C. have been found
(答案→)D. has been found
解析：考查时态。句意：自从他们探险以来，仅仅一些古代中国的货币在下沉的船中被找到了。题中含有自从他们探险到现在为止，动作持续到现在，所以选D。