In modern China, there is a Zhuzhi poem that reads: "The feelings of the two places are connected in one line, and there is a wonderful mailbox without sound." The communication mode in the material i

In modern China, there is a Zhuzhi poem that reads: "The feelings of the two places are connected in one line, and there is a wonderful mailbox without sound." The communication mode in the material is A. Wireless telegraph B. C

test analysis: the key to solving this question is to accurately analyze the materials and obtain effective information. From the "one-line communication, wonderful mailbox with sound and no shadow" in the materials, we can know that this topic mainly examines students' accurate memorization of the changes of modern social life in China. According to what we have learned, after the 197s, China began to set up wired telegrams, which were used by businessmen, journalists, relatives and friends, so C was chosen.