Theulnais a long bone in your lower arm, next to the radius.
It runs from the elbow to the wrist and is easy to feel near the little finger side of your arm.
The ulna works together with the radius to help your arm bend and turn.
This bone supports your arm when you push, lift, or hold things.
The ulna is thicker near the elbow and becomes thinner as it reaches the wrist.
If the ulna is broken, it may be hard to move your arm or carry objects.
尺骨是前臂里的一块长骨，与桡骨相邻。
它从肘部延伸到手腕，在靠近小拇指这一侧容易摸到。
尺骨和桡骨一起工作，让手臂可以弯曲和旋转。
撸胳膊、举物或托住东西时，尺骨都在支撑着手臂。
尺骨在靠近肘部的地方较粗，向手腕逐渐变细。
如果尺骨断裂，往往会导致手臂难以活动或提东西。
?? 完形填空（Cloze Test）
The ulna is a ______ bone in your lower arm.
(a. round / b. long / c. flat)
You can feel the ulna near your ______.
(a. thumb / b. little finger / c. shoulder)
The ulna works together with the ______.
(a. leg / b. radius / c. neck)
The ulna is ______ near the elbow and thinner near the wrist.
(a. thicker / b. softer / c. shorter)
If the ulna is broken, moving the arm may be ______.
(a. noisy / b. hard / c. easy)
? 选择题（Multiple Choice）
Where does the ulna run from?
A) From the knee to the ankle
B) From the elbow to the wrist
C) From the shoulder to the elbow
Which side of the arm is the ulna easy to feel?
A) Near the little finger
B) Near the thumb
C) Near the shoulder
What does the ulna help you do with your arm?
A) Jump and run
B) Eat and sleep
C) Bend and turn
?? 填空题（Fill in the Blanks）
The ulna and the ______ work together in the forearm.
（可选答案：radius, foot, jaw）
The ulna becomes ______ as it gets closer to the wrist.
（可选答案：thinner, rounder, louder）
When you hold or lift things, the ______ supports your arm.
（可选答案：ulna, nose, face）
If the ulna breaks, carrying objects gets ______.
（可选答案：hard, light, slow）
完形填空
b. long b. little finger b. radius a. thicker b. hard选择题
6. B) From the elbow to the wrist#p#分页标题#e#
7. A) Near the little finger
8. C) Bend and turn
填空题
9. radius
10. thinner
11. ulna
12. hard
??文章CEFR 等级：A1级
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