The main difference between the Earth's atmosphere and the simulated one is ______.
A: their size.
B: their content.
C: their height.
D: their density.
A: their size.
B: their content.
C: their height.
D: their density.
举一反三
- 词汇与结构 This relationship between temperature, altitude, and air density can be expressed as a _______ altitude, or the altitude in the International Standard Atmosphere at which the air density would be equal to the actual air density.
- What is the main cause of the significant change in the earth’s atmosphere?
- Without the atmosphere，we could not breathe． A: the air around the earth B: the height of the mountains C: the water in the ocean D: the size of the cities
- What is the difference between meiguiyi(zhebeiyang) of the Song Dynasty and meiguiyi of the Ming Dynasty? A: Whether it has a literati style or not. B: Whether the height of armrest and backrest is the same or not. C: The difference in used space. D: The difference in size.
- what the analogy is: which two things are being compared?The earth’s atmosphere is like a blanket of gases around the earth. It is only a thin layer but it helps to maintain the temperature of the earth, keeping us warm. It also offers a layer of protection from the intensity of the sun. A: earth’s atmosphere and a blanket B: earth’s atmosphere and gases C: earth’s atmosphere and a layer of protection D: earth’s atmosphere and a blanket of gases