Aknuckleis the bony part in your finger where two bones meet and make a joint.
Each finger has three knuckles, but the thumb has only two.
The knuckle is easy to spot when you make a fist because it sticks out under the skin.
Knuckles let your fingers bend, straighten, and grip things like a pencil or a cup.
The skin over a knuckle is often thicker, since it bends and moves a lot every day.
If you bump your hand, the knuckle might become red or swollen for a short time.
指关节是手指中两块骨头相接形成的关节处突起。
每根手指都有三个指关节，拇指则有两个。
当你握拳时，指关节会在皮肤下鼓起，非常明显。
指关节使手指可以弯曲、伸直，也能抓握铅笔或杯子。
由于经常活动，指关节覆盖的皮肤常常更厚。
如果不小心撞到手，指关节有时会暂时发红或肿胀。
?? 完形填空（Cloze Test）
A knuckle is where two finger bones ______.
（a. break / b. meet / c. hide）
The thumb has ______ knuckles instead of three.
（a. five / b. two / c. four）
When you make a fist, your knuckles ______ under the skin.
（a. disappear / b. stick out / c. turn blue）
Knuckles help fingers bend and ______.
（a. sing / b. straighten / c. glow）
The skin over a knuckle is usually ______ than other skin on the finger.
（a. thinner / b. softer / c. thicker）
? 选择题（Multiple Choice）
Which part of your finger lets you hold objects firmly?
A) Knuckle
B) Nail
C) Cuticle
What happens to a knuckle after you bump your hand?
A) It always breaks
B) It may turn red or swell
C) It disappears
Which finger has only two knuckles?
A) Ring finger
B) Little finger
C) Thumb
?? 填空题（Fill in the Blanks）
Each hand has fingers with three ______, except for the thumb.
（可选答案：knuckles, lines, bones）
Knuckles are joints that help you ______ your fingers.
（可选答案：bend, stretch, color）
The skin above a knuckle may become ______ if you use your hands a lot.
（可选答案：thicker, lighter, colder）
Knuckles let fingers move so you can ______ things.
（可选答案：grip, hear, see）
完形填空
b. meet b. two b. stick out b. straighten c. thicker选择题
6. A) Knuckle
7. B) It may turn red or swell
8. C) Thumb
填空题
9. knuckles
10. bend
11. thicker
12. grip
??文章CEFR 等级：A1级
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