1. I asked his p______ to use his bike, but he didn’t allow me.

2. He is very c______ and he believes he can do everything well.

3. He didn’t agree me, so he r______ to do it with me.

4.Miss Li________(介紹) a new student to the class yesterday.

5.You needn’t get________（緊張）before an exam, or you will fail to pass it.

If you are cycling in foreign countries, you will need to know what these traffic signs and signals mean.

1		A sign like this one means that there is a bike lane(車道). If there is such a sign，you are required to use the bike lane. If there is not such a sign, you should ride with traffic as far to the right side of the road as possible.
2		This signal means you can cross the street along with pedestrians(行人). It has a green picture of a oerson walking instead of using the word“walk”.
3		This signal is the “don’t walk”sign. It is a picture of a red hand, meaning you should stop. You should wait to cross the street until the green picture of the person walking is showing.
4		Car drivers and bikers must come to a complete stop at“STOP” signs.
5		A“YIELD”sign means to slow down and be ready to stop. If there are pedestrians or vehicles in or near the crossroad, you must stop. If there is no traffic in or near the crossroad and it is safe, you may go through.
6		This signal means you are coming to a zebra crossing. Car drivers and bikers must stop to allow people in the zebra crossing to cross the street.
7		When people are working on the roads, parts of the road are often dug up or rough(不平整的). Be careful when yon are cycling. Rough roads could make you fall off your bike. If you must move into the road to go around a work area，you should stop and look carefully to be sure there is no traffic coming.
8		A detour is a way of getting around a roadway that is closed. Roads are usually closed because of road work or dangerous conditions. If you must take a detour, be careful about the roads you aren’t used to.

閱讀理解

Most people like bikes. Perhaps you ride a bike to school. Riding a bike can be great of fun.Do you know how to ride a bike safely?

Careful boys and girls learn to ride their bikes well before they go out on the road.How can you tell whether you are a good rider?

If you can ride a bike in a straight line,you can ride well .If you can’t ,you should practice riding a in a safe place.

To be safe on a bike, you need to use both hands and both feet. Keep your feet on the pedals(腳蹬)and your hands on the handle bars.

You know that your bike is only for one person. It’s not safe to carry anyone with you. Keep yourself safe when you ride on a bike.Watch where you are going all times.

1.Before you learn to ride your bike well, you can’t ________.

2.When you ride a bike, it is _________if you don’t keep your hands on the handle bars.

3.What does the word rider mean in the passage?

4.  The best title for the passage is “__________”.

5.  Which of the following is right?

If you are cycling in foreign countries, you will need to know what these traffic signs and signals mean.

1.What are cyclists required to do when they see the sign?

A.To ride against traffic.

B.To ride on the left side of the road.

C.To ride on the bike lane.

D.To ride on the right side of the road

2.Which of the following signs has the same meaning as the sign?

3.What should cyclists do when they see the sign?

A.They should be careful when they cycle on the rough road.

B.They should take the rough road and fall off their bikes.

C.They should move into the road to go around a work area.

D.They should take another route instead of the closed roadway.

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(輪胎) 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. 冷卻??????? C. 膨脹????????????? ????????????? ????? D.震動(dòng)

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(欄目)?

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

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