(1) The temperature difference should be considered before going up the mountain. Because the higher the altitude, the lower the temperature. The temperature difference between the starting point and the peak of the northern slope is about 19.5 (19 ~ 20) degrees. Prepare the corresponding luggage. (Only consider the temperature difference to get 2 points, and calculate the graph to get 3 points. )

(2) The land belongs to temperate continental climate, with large temperature difference between day and night and strong sunshine, which is conducive to sugar accumulation (2 points).

(3) None on the south slope (1). The reasons are: (the northern slope is influenced by the water vapor of the Atlantic Ocean and the Arctic Ocean, and the northern slope is rich in precipitation), while the southern slope is located on the leeward slope, and the precipitation is not rich. (2 points)

(4) Student B's view is correct (1). Because the bottom-up change of natural vegetation in Tianshan Mountain follows the vertical zonality law of terrestrial natural belt. The reason is that in high mountain areas, the hydrothermal conditions from the foot of the mountain to the top of the mountain change with the increase of height, thus forming a vertical zoning of natural zones. The vegetation change in Xuzhou-Turpan area follows the longitudinal zonality law of land natural belt. The generation of longitude zonality is greatly influenced by water conditions and temperature conditions. (3 points)

Test analysis:

(1) "Although it is summer, please don't forget to bring your winter clothes" because the temperature difference should be considered before going up the mountain. The higher the altitude, the lower the temperature, and the temperature difference between the starting point and the highest point of the northern slope is about 19.5 (19 ~ 20) degrees. Prepare the corresponding luggage.

(2) The reason why Turpan grapes are sweet is because they are located in the northwest inland of China, and belong to temperate continental climate, with large temperature difference between day and night and strong illumination, which is conducive to the accumulation of sugar.

(3) There is no forest distribution on the southern slope of Tianshan Mountain, because (the northern slope is affected by the water vapor of the Atlantic Ocean and the Arctic Ocean, and the northern slope is rich in precipitation), and the southern slope is located on the leeward slope, and the precipitation is not rich.

(4) The change of natural vegetation in Tianshan Mountain from bottom to top belongs to vertical regional differentiation, and the vegetation change from Xuzhou to Turpan follows the vertical zonality law of land natural belt. So student b's point of view is correct. In high mountain areas, the hydrothermal conditions from the foot of the mountain to the top of the mountain change with the increase of height, thus forming a vertical zoning of natural zones. The generation of longitude zonality is greatly influenced by water conditions and temperature conditions.

Comments: This question is moderately difficult. Students are required to master the climate change in Tianshan Mountain, the reason why Turpan grapes are sweet, the reason why there is no forest on the south slope, and the regional differentiation of natural zones.