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大氣圈中與人類生命活動關系最密切的一層是（）
A、平流層
B、同溫層
C、臭氧層
D、對流層
E、中間層
根據大氣溫度隨高度的變化，可將大氣層劃分為（）
A、對流層、平流層、中間層、熱層和外層
B、均質層和異質層
C、電離層和非電離層
D、同溫層、臭氧層、分子氮層和原子氦層
氣溫在高空中是比較冷的，如果在某一高度有增溫現象，導致該位置的溫度比其下方的空氣暖和時，稱之（）
A、高溫層
B、逆溫層
C、同溫層
D、培溫層
2.The writer states that fungi and bacteria（ ）.
3.The passage says that the biosphere（ ）.
4.According to the text, the balance of nature is（ ）.
5.The writer says that ecology is primarily concerned with the（ ）.
'>The biosphere is the name biologists give to the sort of skin on the surface of this planet that is inhabitable by living organisms. Most land creatures occupy only the interface between the atmosphere and the land; birds extend their range for a few hundred feet into the atmosphere: burrowing invertebrates （無脊椎動物） such as earthworms may reach a few yards into the soil but rarely penetrate farther unless, it has been recently disturbed by men. Fish cover a wider range, from just beneath the surface of the sea to those depths of greater than a mile inhabited by specialized creatures. Fungi （真菌） and bacteria are plentiful in the atmosphere to a height of about half a mile, blown there by winds from the lower air. Balloon exploration of the stratosphere （同溫層） as long ago as 1936 indicated that moulds and bacteria could be found at heights of several miles, recently the USA’s National Aeronautics and Space Administration has detected them, in decreasing numbers, at heights up to eighteen miles. They are pretty sparse at such levels, about one for every two thousand cubic feet, compared with 50 to 100 per cubic foot at two to six miles (the usual altitude of jet aircraft), and they are almost certainly in an inactive state. Marine bacteria have been detected at the bottom of the deep Pacific trench, sometimes as deep as seven miles; they are certainly not inactive. Living microbes have also been obtained on land from cores of rock drilled (while prospecting for oil) at depths of as much as 1,200 feet. Thus we can say, disregarding the exploits of astronauts, that the biosphere has a maximum thickness of about twenty-five miles. Active living processes occur only within a compass of about seven miles, in the sea, on land and in the lower atmosphere, but the majority of living creatures live within a zone of a hundred feet or so. If this planet were sealed down to the size of an orange, the biosphere, at its extreme width, would occupy the thickness of the orange-colored skin, excluding the pith.In this tiny zone of our planet takes place the multitude of chemical and biological activities that we call life. The way in which living creatures interact with each other, depend on each other or compete with each other, has fascinated thinkers since the beginning of recorded history. Living things exist in a fine balance which is often taken for granted, from a practical point of view, things could not be otherwise. Yet it is a source of continual amazement to scientists because of its intricacy and delicacy. The balance of nature is obvious most often when it is disturbed. Yet even here it can seem remarkable how quickly it readjusts itself to a new balance after a disturbance. The science of ecology...the study of the interaction of organisms with their environment...has grown up to deal with the minutiae of the balance of nature.
1.According to the passage, the “biosphere” is the layer on the earth's surface（） .
2.The writer states that fungi and bacteria（ ）.
3.The passage says that the biosphere（ ）.
4.According to the text, the balance of nature is（ ）.
5.The writer says that ecology is primarily concerned with the（ ）.
A.where the atmosphere meets the sea B.in which birds, fish and animals would die C.in which plant and animal life can exist D.in which earthworms and other invertebrates can live問題2： A.are only found below the normal altitude of jet planes B.have been found well at the normal altitude of jet planes C.are not found below the surface of the earth D.are mainly found below the surface of the earth問題3： A.extends only 1,200 feet below the earth's surface B.is about seven miles in width C.is as much as twenty-five miles in thickness D.is a zone only about one hundred feet wide問題4： A.something which we should not take for g在大氣層內，大氣密度
A.在同溫層內隨高度增加保持不變
B.隨高度增加而增加
C.隨高度增加而減小