Chapter 4: 应用题 / Word Problems
简单的间隔问题
INTERVAL PROBLEMS
LVL 12
"Let's solve the mystery of gaps and segments in the deep blue! 让我们在深蓝色中解开间隔与段落的秘密！"
timer
Estimated Time
15 MINUTES
military_tech
Potential XP
+150 POINTS
extension
Difficulty
INTERMEDIATE