The scientists remained optimistic that the new telescope would reveal previously unseen galaxies within the first year.
科学家们仍然乐观地认为，新望远镜将在第一年内揭示以前未见的星系。
Which choice best defines “optimistic”?
B — Hopeful and confident about the future. “optimistic” means hopeful and confident about the future.
Which word means “hopeful and confident about the future”?
D — optimistic. “optimistic” means hopeful and confident about the future.
optimistic — hopeful and confident about the future. In Chinese: 乐观的.
optimistic is pronounced /ˌɒptɪˈmɪstɪk/.
The scientists remained optimistic that the new telescope would reveal previously unseen galaxies within the first year. (科学家们仍然乐观地认为，新望远镜将在第一年内揭示以前未见的星系。)
hopeful, positive, confident — all close in meaning to optimistic (hopeful and confident about the future).
pessimistic, gloomy — each the opposite of optimistic (hopeful and confident about the future).
Yes. optimistic is on the SAT Prep Basic list — the everyday academic words the SAT assumes you already have. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.