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1.读“地球外部圈层示意图”回答:①图中字母代表的意义是:A____;B____;C____;D____;E____。②地球外部圈层是指:A.地球最外层的大气圈;B.地壳、水圈、大气圈;C.岩石圈以外的四个圈层;D.大气圈、水圈、生物圈。( )③选择填空:地壳表面以外的各个圈层称为____;在固体地壳表面镶嵌着____,并被____包围着;在地壳表层、____和大气底层,构成生机勃勃的____。A.生物圈;B.水圈;C.岩石圈;D.大气圈;E.外部圈层;F.内部圈层。④大气圈对自然环境的意义有:A大气对地球具有保温作用,使地球内部得以有高温的地核;B
1. Read “Schematic diagram of the Earth’s outer circle” Answer: 1 The meaning of letters in the figure is: A____;B____;C____;D____;E____. 2 The outer circle of the earth refers to: A. The outermost atmosphere of the Earth; B. The crust, water circle, and atmosphere circle; C. The four outer layers of the lithosphere; D. The atmosphere, water circle, and biosphere. () 3 Select Blank: Each circle outside the surface of the crust is called ____; it is inlaid with ____ on the surface of the solid crust and surrounded by ____; it is full of vitality on the surface of the crust, ____, and the bottom of the atmosphere. ___. A. biosphere; B. water circle; C. lithosphere; D. atmosphere; E. outer circle; F. inner circle. 4 The significance of the atmosphere to the natural environment is: A atmosphere has a thermal insulation effect on the earth, so that the earth can have a high-temperature core; B