解析:1、由In other words, the greenhouse effect is a naturalcourse, which is to some degree helpful to us可知,B项正确。2、由Most of the main greenhouse gasesexist naturally in small amounts in our atmosphere, and without them the earth would be 30 degrees colder and human life would not...
A greenhouse is a building made of glass which is used for keeping plants warm when the outside temperature is low. In a similar way there are several gasses in the atmosphere which trap(捕捉) the heat produced by the sun and prevent it from escaping. These gasses are known as “greenhou...
A greenhouse is a building made of glass which is used for keeping plants warm when the outside temperature is low. In a similar way there are several gases in the atmosphere(大气)which trap the heat produced by the sun and prevent it from escaping. These gases are known as “greenhouse...
Most of the main greenhouse gases exist naturally in small amounts in our atmosphere,and without them the earth would be 30 degrees colder and human life would not exist. In other words,the greenhouse effect is a natural course, which is to some degree helpful to us.The problem is that ...
Most of the main greenhouse gases exist naturally in small amounts in our atmosphere and without them the earth would be 30 degrees colder and human life would not exist. In other words the greenhouse effect is a natural course which is to some degree helpful to us.The problem is that in...
A greenhouse is a building made of glass which is used for keeping plants warm when the outside temperature is low. In a similar way, there are several gases in the atmosphere which trap the heat generated by the sun and prevent it from escaping. These gases are known as "greenhouse ...
T his is not simply air pollution.Most of the main greenhouse gases exist naturally in small amounts in our atmosphere, and without them the earth would be 30 degreescolder and human life would not exist. In other words, the greenhouse effect is a natural course which is to some degree ...
Most of the main greenhouse gases exist naturally in small amounts in our atmosphere, and without them the earth would be 30 degrees colder and human life would not exist. In other words, the greenhouse effect is a natural course which is to some degree helpful to us. The problem is ...
【题目】阅读理解A Greenhouse is a building made of glasswhich is used for keeping plants warm when the outside temperature is low. In a similar way there are several gases in the atmosphere(天气) which trap the heat produced by the sun and prevent it from escaping. T hese gasesare known...
Most of the main greenhouse gasses exist naturally in small amountsin our atmosphere, and without them earth would be 30 degrees colder and human life would not exist. In other words, the greenhouse effect is a natural course which is to some degree helpful to us.T he problem is that in...