 | The gold content of the soil on Kodlunarn Island is much lower today than it was in the sixteenth century. |
 | The two mining expeditions funded by Elizabeth I did not mine the same part of Kodlunarn Island. |
| The methods used to assess gold content of the soil samples provided by Frobisher were different from those generally used in the sixteenth century. |
| Frobisher did not have soil samples from any other Canadian island examined for gold content. |
| Gold was not added to the soil samples collected by Frobisher before the samples were examined. |
我选的B答案是E,求大神指教。我认为正因为两队不在一处挖掘才能提供证明这个岛的金子不多，才可以说明F的不对。我认为E不能 close 这个gap（为什么两队回来检查说没有金子就说明F错）