The historical events reflected in the slogan below are A. September 18th Incident B. May 4th Movement C. July 7th Incident D. Xi 'an Incident.

Analysis of test questions: This question examines students' understanding of the May 4th Movement. According to the picture "Save Qingdao, Join Hands with Our Compatriots" and what we have learned, the May 4th Movement was a patriotic movement of China people who broke out in Beijing on May 4th, 1919. After World War I, the victorious imperialist countries held the Paris Peace Conference in France, with China as the victorious country. At the meeting, the legitimate proposal of the China delegation was rejected and Qingdao in China was transferred to Japan. The China delegation suffered a major defeat at the Paris Peace Conference, and the news spread to Beijing, which ignited the long-standing anger in the hearts of the people. On May 4, young students took to the streets and held demonstrations, and the May Fourth Movement broke out. Item A is a local war of aggression against China launched by Japanese imperialism in 1931, item C is a full-scale war of aggression against China launched by Japanese imperialism, and item D is an incident of forcing Chiang Kai-shek to resist Japan launched by Zhang Xueliang and Yang Hucheng. Choose B in this topic.

Comments: This topic is less difficult. It examines students' ability to interpret picture information and memorize historical knowledge. In addition, this topic is examined from many angles, such as the reasons, nature, stages, preliminary achievements and significance of the May 4th Movement and the proletariat's landing on the historical stage. The fuse of the May 4th Movement belongs to basic knowledge in the teaching materials, and students can directly answer it according to historical facts, which belongs to sub-topics.