Read the distribution map of major industries, cities and railways in the United States, and complete the following requirements. (1) As can be seen from the map, the main part of the United States is located in _ _ _ _ in the five zones.

(1) As can be seen from the figure, the main part of the United States is mainly located between 31 N and 51 N, so most of it belongs to the north temperate zone; The main body of the United States is mainly located between 81 W and 121 W, so it is located in the western hemisphere; Its northern neighbor A is Canada;

(2) The vicinity of the Great Lakes in the United States is an old industrial base with a dense population, a vast consumer market, a cold and humid climate and a developed animal husbandry, so it is the dairy belt of the United States; American industrial areas are mainly distributed in the northeast, and Detroit in this area has a developed automobile industry and is known as the "automobile city" in the United States. As can be seen from the picture, B is San Francisco, and near it is Silicon Valley, which is the high-tech industrial center of the United States.

(3) The gross industrial and agricultural output of the United States ranks first in the world, and it is the world's largest economic power. The United States has developed industries and a large demand for resources. The United States is the world's largest resource consumer and the largest waste emitter. (4) As can be seen from the figure, the distribution of railway lines in the United States is mainly east-west. < P > Therefore, the answer is: (1) North temperature; West; Canada; (2) dairy cattle; Northeast China; Detroit; San Francisco; (3) resource consumption; (4) things.