Life as we know exists on the earth because the atmosphere ___________.
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1 .Paragraph 1 _________.
A The Definition and the Description of the Ions B The Definition and the Description of the Stratosphere C The Sun’s Rays D Recent Studies of the Upper Atmosphere VS Past Studies E The Definition and the Description of the Troposphere F The Composition of the Atmosphere
2 .Paragraph 2 _________.
A The Definition and the Description of the Ions B The Definition and the Description of the Stratosphere C The Sun’s Rays D Recent Studies of the Upper Atmosphere VS Past Studies E The Definition and the Description of the Troposphere F The Composition of the Atmosphere
3 .Paragraph 3 _________.
A The Definition and the Description of the Ions B The Definition and the Description of the Stratosphere C The Sun’s Rays D Recent Studies of the Upper Atmosphere VS Past Studies E The Definition and the Description of the Troposphere F The Composition of the Atmosphere
4 .Paragraph 4 _________.
A The Definition and the Description of the Ions B The Definition and the Description of the Stratosphere C The Sun’s Rays D Recent Studies of the Upper Atmosphere VS Past Studies E The Definition and the Description of the Troposphere F The Composition of the Atmosphere
5 .At the top of Jungfrau, which towers 12000 feet above the town of Interlaken in Switzerland, the temperature is usually _________.
A contains a layer of ozone gases B about 42 degrees colder than on the ground C 21% oxygen by weight D less than 1% of xenon by volume E about 75 degrees colder than in Interlaken F is warmed by the earth’s heat.
7 .The atmosphere consists of ___________.
A contains a layer of ozone gases B about 42 degrees colder than on the ground C 21% oxygen by weight D less than 1% of xenon by volume E about 75 degrees colder than in Interlaken F is warmed by the earth’s heat.
8 .The troposphere is the warmest part of the atmosphere because it __________.
A contains a layer of ozone gases B about 42 degrees colder than on the ground C 21% oxygen by weight D less than 1% of xenon by volume E about 75 degrees colder than in Interlaken F is warmed by the earth’s heat.
9 .The phrase “from can to can’t” in paragraph 1 means ______.
A from beginning to end B from birth to death C from morning to night D from time to time
10 .How to spend leisure time wisely is not a particularly difficult problem for people ______.
A who are very busy everyday B who are sick in bed C who are aged and in good health D who have retired from work
