試題詳解

48 According to the second paragraph, which of the following is true?
(A)Sunlight is the main cause that increases the Earth’s temperature during the past 50 years.
(B)Gas using could be the main reason for the increase in global surface temperature.
(C)Clouds and ice cannot help the sunlight to reflect back into spaces.
(D)The rate of temperature increase has nearly doubled in the past two decades.