【正确答案】 B

【答案解析】[听力原文] 26-30 When I was in British Columbia last July working at the department's archaeological dig, I saw the weirdest rainbow. At first I couldn't believe my eyes because the bands of color I saw weren't in a single half circle across the sky. Instead, I saw a full circle of rainbow hues hanging in the sky just above the sea. Inside the circle there was a big white disc and above the circle there was another round band of colors forming a halo. There were curved legs of multicolored light coming off the sides of the circles. It was an incredible sight. I ran back to our main camp and tried to get our cook to come with me to see my fantastic find before it disappeared. He just laughed at my exciting story and told me that what I saw was nothing special.., just some "sun dogs". He said I'd be sure to see many more before I left. And sure enough, I did. When I got back from the dig I asked Professor Clark about the "sun dogs," and she's going to tell us more about them. 26. Why was the student in British Columbia? 说话者一开始就提到，他当时是在系里的考古发掘地点(archaeological dig)工作，所以正确答案是B。

【正确答案】 A

【答案解析】[听力原文] What did the student find so unusual about the "rainbow" he saw? 这位学生所看到的“彩虹”之所以不同寻常是因为它不是半圆形，而是一个完整的圆形。可见，它的不寻常之处在于它的形状，因此选A。

【正确答案】 C

【答案解析】[听力原文] What was inside the large circle? 这是一道细节题，在大环的里面是一个大的白色圆盘，正确答案是选项C。

【正确答案】 D

【答案解析】[听力原文] What did the cook say about the phenomenon the student had seen? 从"laughed at"、"nothing special"、"to see many more"等词不难判断出厨师对于学生所看到的现象无动于衷，因为这种现象很常见。因此选D。

【正确答案】 C

【答案解析】[听力原文] What did the cook call the phenomenon? 关于这种天文现象的名称，这段话里先后出现了两次"sun dogs"，意思是“幻日，假日”，正确答案是C。