護理師在嬰幼兒健檢時評估一名幼兒。18 個月的幼兒應展現哪項發展里程碑？
A nurse is conducting an assessment on a toddler during a well-child visit. Which developmental milestone should the nurse expect to observe in an 18-month-old child?
- AStacking a tower of six blocks堆疊六塊積木
- BSpeaking in full, complex sentences說完整的複雜句子
- CRunning with confidence and speed自信且快速地奔跑
- DWalking up stairs with assistance✓ 正解在協助下爬樓梯
幼兒發展里程碑的評估是健檢重點。18 個月的幼兒通常已發展出穩定的行走能力，並能在家長的協助下扶著欄杆上下樓梯（階段性發展）。堆疊積木能力隨年齡增長而進步（18 個月約 2-3 塊，2 歲約 6 塊）；語言能力在 18 個月時多為單字組合，複雜句子通常在 3 歲以後；奔跑自如則通常在 2 歲後發生。
Assessment of developmental milestones is a key focus of well-child check-ups. An 18-month-old typically demonstrates stable independent walking and can ascend and descend stairs with parental assistance while holding a railing (stage-appropriate development). Block-stacking ability progresses with age (approximately 2 to 3 blocks at 18 months, and approximately 6 blocks at 2 years). Language skills at 18 months mainly consist of single words, with complex sentences typically appearing after 3 years of age. Running smoothly usually develops after age 2.