Choose all that apply. Refraction telescopes: 1. are used to pick up the faintest objects in the sky
2. have small lengths compared to other telescopes
3. are used when image quality is important
4. require less maintenance
5.are used by professional astronomers

Read the sentences below in 1962, i tried to enroll as the first black student at the university of mississippi. the governor of mississippi blocked my entrance which best describes the verbs used in the sentences? o they are past tense verbs, which are often used in narrative essays o they are past tense verbs, which are not often used in narrative essays. o they are future tense verbs, which are often used in narrative essays o they are future tense verbs, which are not often used in narrative essays.