Li Ming is staying with the Wang's family for the weekend.
Today it is warm and fine. The family are having dinner in the garden. They often have dinner in the garden on a warm and fine spring day. Now Mr. and Mrs. Wang are sitting at the table with Li Ming under a tree.
"It's great to have dinner out here on such a lovely day," Mrs. Wang says. "What's the weather like in your hometown, Li Ming?"Mr. Wang asks. "It's not very warm in spring. But I like the spring there best." "Help yourself to some cakes, Li Ming," Mrs. Wang says. "Thanks," says Li Ming. "The cakes are very nice. I enjoy the dinner very much."

阅读下列材料，回答问题。

材料1：2008年7月11日，少先队员挥着国旗送别“雪龙”号。当日，“雪龙”号极地科考船从上海浦东外高桥的极地科考基地码头启程前往北极，将展开为期75天的第三次北极科考。此次出征北极是我国北极科考史上规模最大、耗资最多的一次。科考将主要针对北极气候变化对我国气候变化的影响、北冰洋独特的生物资源和基因资源、北极地质和地球物理等展开研究。

材料2：北极地区投影图。