As a bonus, the telescope's high-resolution camera also captured images of a previously unknown comet in the same field.
作为额外好处，望远镜的高分辨率相机还在同一视场中捕捉到了一颗此前未知的彗星图像。
Which choice best defines “bonus”?
B — Extra gift, reward. “bonus” means extra gift, reward.
Which word means “extra gift, reward”?
C — bonus. “bonus” means extra gift, reward.
bonus — extra gift, reward. In Chinese: 奖金，额外好处.
bonus is pronounced /ˈboʊnəs/.
As a bonus, the telescope's high-resolution camera also captured images of a previously unknown comet in the same field. (作为额外好处，望远镜的高分辨率相机还在同一视场中捕捉到了一颗此前未知的彗星图像。)
extra, perk, dividend — all close in meaning to bonus (extra gift, reward).
penalty, deduction — each the opposite of bonus (extra gift, reward).
Yes. bonus 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.
bon(good)+us(we)