参考答案

正确答案：B
解析：细节题。最后一段中提到：If you are on a small ship of up to 100 passengers, then you have the chance to go ashore every time．If the ship is larger, then there will be less opportunity for landings．因此起决定作用的是船的大小, 而不是是否fully equipped, 即A选项错误；选项C, 由You should always make sure that the ship／tour company you use to go to Antarctiea is a member of the IAATO．可以得知所有去南极的航船都是IAATO成员, 但这并不能确保你想上多少次岸就上多少次(go ashore as often as possible)；D选项文章并未涉及。