单选题 Encounter Environmental Tours offers trips to some of the most beautiful and isolated wildernesses in the world ______ all the comforts of five-star accommodations.

【正确答案】 B
【答案解析】横线前后是两个名词短语，因此横线处应填入并列连词或介词。只有(B)plus符合要求。这里的plus=and also。