The picture below is a "schematic diagram of a certain weather system affecting our country". Read the picture to answer the following questions. Small question 1: The picture shows a sketch of the weather system, where M is a front of different natures.

Small question 1: B

Small question 2: A

Small question 1: This question Examine frontal cyclones. Fronts near the ground are often combined with cyclones and are called frontal cyclones. The left side of the cyclone is a cold front system, and the right side is a warm front system. Therefore, L1 is a cold front system and L2 is a warm front system. So choose option B for this question.

Quiz 2: In the next two days, N will be affected by the cold front, causing rainy weather and lower temperatures, but the diurnal temperature range will become smaller. So choose option A for this question.