A man bought a donkey at the market one day and took him home. Now the man owned several donkeys already and he knew each one’s character very well. One of the donkeys was very strong and brave. Another always wanted to make people happy by working quickly but soon got tired. One donkey was very lazy. He hated going to work in the morning and he did as little as he       possibly could all day long. When the other animals were being loaded up(装载), he always tried to be the last so that he would get the lightest load.
The man led the new donkey into the yard. For a moment the new donkey stood sniffing(闻，嗅) at his new friends. Then, without hesitation, he came up to the lazy donkey and began eating comfortably at his side.
Though it was late in the day, the man immediately led the new donkey out of the yard, straight back to the market.
“You can’t have given him a fair trial yet,” said the seller, “It is only ten minutes since you bought him.”
“I don’t need to try him any more,” replied the man, “I know just what he is like from the friend he chose for himself. Take him away and give me my money back. I can do without donkeys like him.”
【小题1】Why did the man buy a new donkey in the market?

1.This ad is for_____________.

A．a job             B．a shop            C．sweaters          D．computers

2.If you buy something ________, the first thing you need is a computer.

A．online            B．at school          C．on TV             D．in a shop

3.After you find sweaters online, you want a small black one and you can click on “__________”.

A．clothes           B．small             C．black             D．small and black

4.What don’t you need to enter into the computer?

A．Your name.                            B．Your address.

C．Your ID card number.                     D．Your age.

5.What does the underlined word “click” mean?

A．查找             B．点击             C．选择　　         D．勾出

Have you ever rubbed your hands together when they get cold? Why do we do that? We do that for friction. Friction happens when two things that aren’t very smooth rub together to make heat energy. The faster you rub two things together, the more friction ( and heat) you can make. Let’s discover friction!

WHAT YOU’LL NEED

·Soap ·Water·Your hands!

WHAT TO DO

Make sure your hands are dirty.

Rub your hands together until you feel the heat of your hands.

Now, use soap and water to get your hands very slippery(滑的).

Try to make friction happen while your hands are slippery.

Please write down what has happened.

LET’S TALK!

Friction is an energy that happens when two things rub together. When friction happens, it makes heat! When your hands are slippery, they won’t make very much friction and your hands won’t get so hot.

DID YOU KNOW?

Friction happens when you stop your fast running bike.

Ancient people made fire by rubbing two pieces of wood together. Friction happened though they didn’t know it.

____?___

Friction is everywhere. Have you ever noticed situations where friction is happening? If not, ask your parents to take you out in a car. If it is not hot, touch the tires(轮胎) of the car before and after a short drive to see how much warmer they get from friction.

1. This text is most probably________________________.

A. a science report????????????? ????????????? ????????????? 　 B. a car advertisement

C. a rubbing introduction?????? D. a chemistry programme

2.What does the word “friction” in this text mean in Chinese????????

A.摩擦????????????? ????????????? B. 冷却??????? C. 膨胀????????????? ????????????? ????? D.震动

3.___________ is not an example of friction.

A. Bike riding????????????? B. Car driving??? C. Hands rubbing????????????? ? D.Friction discovering

4.What’s the last column(栏目)?

A. THINK IT OVER!????????????? ????????????? ????????????? ????????????? ?? B. WHAT HAPPENED?

C.EVERYDAY ACTION:????????????? D. WORK WITH PARENTS

1.This ad is for_____________.

A．a job             B．a shop            C．sweaters          D．computers

2.If you buy something ________, the first thing you need is a computer.

A．online            B．at school          C．on TV             D．in a shop

3.After you find sweaters online, you want a small black one and you can click

on “__________”.

A．clothes           B．small             C．black             D．small and black

4.What don’t you need to enter into the computer?

A．Your name.                            B．Your address.

C．Your ID card number.                     D．Your age.

5.What does the underlined word “click” mean?

A．查找             B．点击             C．选择　　         D．勾出