（2016高考训练）阅读下列材料，从每题所给的选项中选出最佳选项。
Masses of floating ice are so large that they dwarf__your__ship，making you question whether your ship still can be spotted among such floating mountains.They are so improbable looking that you simply look in wonder.It seems that nothing that large could be natural—and then it strikes you that something so large could only be natural.
