The ______ of free oxygen in the atmosphere was the result of the expansion of plant life. A. B. C. D.
presence
举一反三
- A plant asset's useful life might not be the same as its productive life.
- Task3 ： Listen to the following report and write down the correct choice in the blank. (把正确的选项填写到输入框中） [音频] Questions 16 to 18 are based on the passage you have just heard. 16. A. There were no planets without moons. B. There was no air or water on Jupiter. C. Life was not possible in outer space. D. The mystery of life could not be resolved. 17. A. It has a number of active volcanoes. B. It has an atmosphere like the earth’s. C. It has a large ocean under its surface. D. It has deep caves several miles long. 18. A. Light is not an essential element to it. B. Life can form in very hot temperatures. C. Every form of life undergoes evolution. D. Oxygen is not needed for some life forms./module/audioplay.html?objectid=7da4b26efb9ff1b466218e47d396afc3
- 出头教育: Time has（）the long history, free academic atmosphere and energetic students’ life of the university.
- 【单选题】下面 C代码的输出结果是()。int answer,result;answer=100;result=answer-10;printf( “The result is %d” , result+5); A. The result is 90 B. The result is 95 C. The result is 10 D. The result is 100
- Which of the following is NOT a free morpheme? A: A. large B: B. unlucky C: C. kind D: D. boy
内容
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Ⅰ. Spring A. temperature B. color C. implication of life Ⅱ. Autumn A. color B. temperature C. implication of life Ⅲ. Winter A. temperature B. implication of life C. color
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The atmosphere in the vicinity of a high pressure areas is called a (n) _____。 A: A. anticyclone B: B. cold front C: C. occluded front D: D. cyclone
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1. The gas with maximum percentage in the atmosphere is .(Nitrogen / Oxygen)
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Four aspects are usually considered by the travelers when choosing a hotel: atmosphere, location, services and ______. A: A. architecture B: B. scale C: C. reputation D: D. facilities
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The gas with maximum percentage in the atmosphere is ( ). A: nitrogen B: hydrogen C: oxygen D: carbon dioxide