[单项选择]行政复议机关决定不予受理或受理后超过行政复议期限不作答复的，公民、法人或其他组织可以自收到不予受理决定书之日起或者行政复议期满之日起( ) 内，向人民法院提起行政诉讼。
A. 15日
B. 5日
C. 30日
D. 60日

Passage 2
The molecules of carbon dioxide in the Earth’s atmosphere affect the heat balance of the Earth by acting as a one-way screen. Although these molecules allow radiation at visible wavelengths, where most of the energy of sunlight is concentrated, to pass through, they absorb some longer wave- length, infrared emissions radiated from the Earth’s surface, radiation that would otherwise be transmitted back into space. For the Earth to maintain a constant average temperature, such emissions from the planet must balance incoming solar radiation. If there were no carbon dioxide in the atmosphere, heat would escape from the Earth much more easily. The surface temperature would be so much lower that the oceans might be a solid mass of ice.
Today, however, the potential problem is too much carbon dioxide. The burning of fossil fuels and the clearing of forests have increased atmospheric carbon dioxide by about 15 percent in the last hundred years
A. Objective yet concerned.
B. Angry yet resigned.
C. Completely detached.
D. Incredulous.