A is right. Northeast China is rich in mineral resources, and the main minerals are relatively complete. The main metallic minerals are iron, manganese, copper, molybdenum, lead, zinc, gold and rare elements, while the nonmetallic minerals are coal, oil, oil shale, graphite, magnesite, dolomite, talc and asbestos. These resources occupy an important position in the country. The iron ore deposits in Anshan and Benxi account for about 1/4 of the national total, and are still one of the largest proven mining areas in China.
Northeast China built a complete industrial system in 1930s and became the most advanced industrial base in Northeast Asia.
After the founding of New China, due to the original industrial base and proximity to the Soviet Union, many heavy industry construction projects were also arranged in the Northeast. Northeast China once occupied 90% of China's heavy industry base.
B is right. Starting from the first five-year plan. 1956 announced the completion of the tasks specified in the plan ahead of schedule. At the end of 1953, three major projects, such as large-scale rolling mill in Angang, were completed and put into operation. 1956, Changchun No.1 Automobile Factory, the earliest truck factory in China, produced the first automobile. China No.1 Aircraft Factory successfully trial-produced the first jet; The first machine tool plant in China and the first machine tool plant in Shenyang were completed and put into operation.
That's right. From the era of urban warlord melee and puppet Manchuria Japanese occupation, the railway and highway traffic in Northeast China is more developed than other places. After the founding of the People's Republic of China, as a heavy industry base, the traffic is also good.
D is wrong. High-tech industries are mainly located in Zhongguancun, Beijing, Shanghai, Wuhan Optical Valley and other cities. If the northeast is dominated by high-tech industries, the state will not put forward slogans and measures to revitalize the old industrial bases in Northeast China.