Summarization：the paragraph is followed by an incomplete phrase or sentence which summarizes the main idea of the paragraph. Spell out the missing letter of the word on your answer sheet.

Orbiting only about three million miles out from its star, the Jupiter-size gas giant planet, dubbed TrES-2b, is heated to 980 degrees Celsius. Yet the apparently inky world appears to reflect almost none of the starlight that shines on it.
A d planet that reflects almost no light.