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
A: the air around the earth
B: the height of the mountains
C: the water in the ocean
D: the size of the cities
举一反三
- The Earth is surrounded by an ocean of gases we call the atmosphere. The atmosphere is important because it contains the air most living things breathe. It also absorbs heat energy from the sun. It even recycles water by returning it back to the Earth as rain. Without the atmosphere, life as we know it could not exist on Earth. The atmosphere is important for the single reason that most living things need to breathe on Earth. A: Right B: Wrong C: Not mentioned
- You feel cool when you are near a lake or an ocean because （）. A: the water is cold B: the earth is hot C: the water is colder that the earth D: the cool air from the water moves towards the land
- 中国大学MOOC: Without sunlight, air and water, plants on the earth _____ well.
- Earth's atmosphere is filled with CO and other _________ gases, nobody could breathe it. A: smelly B: dangerous C: active D: deadly
- Without sunlight, air and water, plants on the earth _____ well. A: will not grow B: would not grow C: had not grown D: would not be grown