D．Gillian Flynn's.

　　B

　　I took a trip to Antarctica last year.

　　First I flew from Buenos Aires, Argentina, to the city of Rio Gallegos in a military (军事的) plane. Then the plane took me and the others to Marambio base, in Antarctica from Rio Gallegos. During the four­hour trip in the_Hercules,_I was impressed by the ice around us.

　　As I set foot in Antarctica for the first time in my life, a rush of glory ran through me. The scientists on board told me about the ozone layer (臭氧层) and the British explorer Ernest Shackelton, the second man to set foot in Antarctica. I will never forget what I was told about the ozone layer. I was told it was getting thinner and thinner because of pollution and emission gases, which eventually would change the weather balance in the whole planet. I couldn't help feeling worried about the future of humans after I heard that.

　　In Esperanza base there are elementary schools for kids. In Jubany base I saw igloos (拱形圆顶小屋) and it was interesting to learn that only scientists lived there. I was allowed to get near the Antarctic animals. The penguins are my favorite because they are cute and I like the way they stick out their heads in curiosity, the way they walk and how they survive in harsh temperatures. I also saw elephant seals, which from the distance looked like rocks. I was also amazed at watching the amazing humpback whales (座头鲸) for the first time in my life.

　　After my nine­day trip, I boarded the Hercules to get back. I felt as if I had been on this trip forever because I had lost track of time and space. I also realized that this had been a magical trip.

　　4．What does the underlined part "the Hercules" in Paragraph 2 probably refer to?

　　A．A ship.　　B．A plane.

　　C．A base. D．A city.

　　5．What the scientists told the author about the ozone layer was ________.

　　A．interesting B．positive

　　C．concerning D．useless

　　6．What did the author do after he/she set foot in Antarctica?

　　A．He/She lived in an igloo.

　　B．He/She observed some penguins.

　　C．He/She saw some rocks.

　　D．He/She played with an elephant seal.

7．The author most probably considered his/her trip to be ________.