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词汇提示

1.compact 袖珍的

2.disc 圆盘

3.square 正方形

4.rectangle 长方形

5.triangle 三角形

6.orchestra 管弦乐队

7.stand for 代表

8.oval 椭圆形

9.bumps 凸起

10.lumps 肿块

11.dull 钝的

12.blade 刀片

13.represent 代表

14.truck 卡车

原文

Describing Things

Some things are different shapes.

They can be described by their shapes.

A circle is round.

A compact disc is a circle.

A square has four equal sides.

A rectangle is similar，but two of the sides are longer.

A triangle has only three sides.

Have you ever seen anyone play an triangle in an orchestra？

The word“triangle”can stand for an instrument or a shape.

An oval is rounded，but it is not round.

An egg is oval shape.

The floor is flat.

If something is smooth，it has no bumps or lumps.

Silk is smooth.

Some things are rough.

Sandpaper is rough.

If something is dull，it is not sharp or pointed.

A dull knife will not cut bread because the blade is not sharp.

If something is pointed，it has a sharp end.

A sharp pencil has a pointed end.

A pencil that has been used a lot and hasn't been sharp，has a dull end.

Some things are soft.

A Teddy bear is soft.

It feels good to touch.

Some things are hard.

A rock is hard.

Soft can also represent a noise level.

If you have a soft voice，it is not very loud.

If someone tell to speak softly，they want you to speak quietly.

“Loud”is the word usually to describe noises that hurt your ears.

A big truck will make a loud noise.

Sometimes your mother will tell you that your music is too loud.