小题1:B
小题2:A
小题3:A
小题4:C
小题1:细节题。从第一段话最后一句中“when we first came off the mountain we just climbed.”可得知答案选B。
小题2:细节题。从第二段第一句话中“When we heard that two seats in first class on our next flight were available for a bit higher price, we jumped at the opportunity. ”。可得知答案选A。
小题3:推理题。题干是作者登机后，感到怎样，通过第四段中作者对空姐的谈话可知作者没有感到不舒服、紧张、失望。因此可排除B、C、D，答案选A。
小题4:细节题。通过倒数第二段中空姐的回答“Because you are the only passenger here to say something nice to me tonight and I really appreciate your kindness.” 可推断出答案选C。