TOEFL Listening: ETS-TOEFL听力机经 - Q32P5R2E9B34C0QAP$

Based on the lecture, which answer choices describe emission nebulae and which describe reflection nebulae?{"t":["Emission Nebulae","Reflection Nebulae","Dark Nebulae"],"c":["They give off red light.", "They give off blue light.", "They can only be seen from locations near the equator.", "They do not contain glowing gas."]}