The latitude and longitude of Jiangyan is 120.08 E, 32.34 N, so answer the question 17 ~ 20. 17. From the temperature zone, Jiangyan is located at () 18. Jiangyan

In winter, the temperature difference between the north and the south of China is large, the south is warm, and the farther north it is, the lower it is. In summer, it is usually very hot in the north and south. In winter, the sun shines directly in the southern hemisphere. For the northern hemisphere, the higher the latitude, the lower the midday sun altitude angle. In northern China, the sun's height angle at noon is lower than that in the south, and the daytime is shorter, so the sun's light and heat are less. Therefore, the winter low temperature in northern Heilongjiang Province can reach -30. The temperature in Jiangyan, Taizhou City at 32.34 north latitude is above 0℃, while the average temperature in winter in Hainan Province is around 20℃, with warm and hot climate and trees everywhere.

So choose: a.