According to the following weather forecast materials

(1) The northeast-southwest trend in the west section (1) and the northwest-southeast trend in the middle section (1); The eastern part is n

According to the following weather forecast materials

(1) The northeast-southwest trend in the west section (1) and the northwest-southeast trend in the middle section (1); The eastern part is northeast and southwest (1 min).

(2) A is more than 180 days (or more than 180 and less than 200 days) (1 min) and B is less than 140 days (or less than 140 days) (1 min

The terrain is low (1), blocked by mountains, less affected by winter winds (1), and the temperature is high (1).

(3) Geological disasters such as landslides and mudslides (2 points)? Meteorological disasters such as urban floods (2 points)?

Test analysis:

(1) As can be seen from the figure, the strike of the L isoline is divided into three parts, with the northeast and southwest strike in the west section and the northwest and southeast strike in the middle section; The eastern section is northeast and southwest.

(2) Judging from the frozen isoline of the river in the figure, A is greater than 180 days (or greater than 180 and less than 200 days) and B is less than 140 days (or less than 120 days). The reason is that the terrain is low, blocked by mountains, less affected by winter winds and the temperature is high.

(3) Site C is located in a mountainous area, which may lead to geological disasters such as landslides and mudslides, due to the heavy precipitation of super typhoon "Blavin"; The low terrain of Dingdi may cause meteorological disasters such as floods and urban waterlogging.

Comments: This question is moderately difficult. Students are required to master isoline judgment, bending cause analysis, and disasters caused by super typhoon "Blavin" heavy precipitation.