If you usually take the school bus or sometimes need to take public buses to school, there are some important rules you should know.

·When you are waiting for the bus, you should wait at the bus stop, and stand well back.

·When you get off the bus, make sure you and the driver can see each other, and wait for the driver to signal you before you cross the road in front of the bus.

·Never go back for anything you may leave on the bus when it is starting.

·Never bend down near the bus when you walk to or from the bus stop.

·You should cross the street at a crosswalk or a street corner, and wait for the light to turn green or for the WALK crossing signal.

·It is important to look carefully to the left, the right and the left again when you cross the street.

·Remember that it is dangerous to stay in the areas around buses where the driver can’t see you. Don’t run between parked cars or buses.

·Do not run across the street or through parking areas to catch up with your friends.

1.When you are waiting for the bus, you should wait    .

A. at the bus stop     B. on the street   C. at a crosswalk  D. a street corner

2.It is important to      when you cross the street.

 A. run quickly      　　　　　

B. wait for the light to turn green

C. look carefully to the left     

D. look carefully to the right

3.If you walk to or from the bus stop, you mustn’t        .

A. bend down on the bus

B. cross the street at a crosswalk or a street corner

C. bend down near the bus

D. look carefully to the left, the right and the left again

4.This passage is mainly about        .

A. safety rules for students by bus

B. safety rules for drivers

C. safety rules for children by train

D. how to cross the street

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

If you get into the forest with your friends, stay with them always. If you don’t, you may get lost. If you really get lost, this is what you should do. Sit down and stay where you are. Don’t try to find your friends—let them find you by staying in one place.

　　There is another way to help your friends or other nearby people to find you. Give them a signal (信号) by shouting or whistling (吹口哨) three times. Any signal given three times is a call for help.

　　Keep up shouting or whistling always three times together. When people hear you, they will know that you are not just making noise for fun. They will let you know that they have heard your signal. They give you two shouts, two whistles, or two gun-shots (枪声). When someone gives you a signal, it is an answer to a call for help.

　　If you don’t think that you will get help before night comes, try to make a little house---cover up to the holes with branches (树枝) with lots of leaves. Make yourself a soft bed with leaves and grass.

　　What should you do if you get hungry or need drinking water? You would have to leave your little house to look for a river. Don’t just walk away. Pick off small branches and drop them as you walk so that you can find your way back. The most important thing to do when you are lost is—stay in one place.

1.If you lost in the forest, you should _______.

A. stay where you are and give signals three times

B. walk around the forest and shout so that your friends could hear you

C. try to find your friends as soon as possible

D. try to get out of the forest and shout for help

2.If you want to let people believe that you are not just making noise for fun, you should _____________.

A. tell people that you are lost?????

B. keep up shouting or whistling

C. shout at the top of your voice????

D. shout or whistle three times

3.When you hear two shouts, or whistles, or gunshots, __________.

A. you should shout more loudly??????

B. you can whistle three times

C. it is an answer to your call for help??

D. you should try to run to them

4.When you want to leave your place to get drinking water, you should ________.

A. just go to the river

B. find some glasses or bottles before you go

C. make a fire so that you can have some tea

D. leave marks so that you can find your way back

5.This passage mainly tells you __________.

A. when you hear a signal always three times, it is a call for help

B. What you should do if you get lost in a forest

C. any signal given twice means an answer to a call for help

D. how you can live longer in a forest

短文填空  先通读下面的短文，然后根据短文内容和所给首字母，在空格内填入一个适当的单词，使短文意思完整。所填单词必须在答题卡标有题号的横线上完整写出。（本大题共10空，每空0.5分，共5分）

　In many countries, people t__________ 1. by car or by bike. They also get from place to place using p__________2.transport such as buses and trains. However, some people live in parts of the world where it is i__________3. to build roads. In these places, animals or other forms of transport have to be used.

　　It is difficult to w__________ 4. in snow but easy to ski over it. So in places like Alaska, people use skis. If they want to go faster, they get dogs to p__________ 5.them on sleds(雪橇). Riding a snowmobile(雪地摩托) is a more m__________6., but expensive way of getting around on snow.

　　In desert(沙漠) like the Sahara in North Africa, people s__________ 7.get around on camels. Camels survive w_________8. in the desert, not because they can s_________9.water in their bodies though! They can survive without water for two weeks and without f__________10.for up to a month. He can only go without water for about three to five days.

If you usually take the school bus or sometimes need to take public buses to school, there are some important rules you should know.
·When you are waiting for the bus, you should wait at the bus stop, and stand well back.
·When you get off the bus, make sure you and the driver can see each other, and wait for the driver to signal you before you cross the road in front of the bus.
·Never go back for anything you may leave on the bus when it is starting.
·Never bend down near the bus when you walk to or from the bus stop.
·You should cross the street at a crosswalk or a street corner, and wait for the light to turn green or for the WALK crossing signal.
·It is important to look carefully to the left, the right and the left again when you cross the street.
·Remember that it is dangerous to stay in the areas around buses where the driver can’t see you. Don’t run between parked cars or buses.
·Do not run across the street or through parking areas to catch up with your friends.
【小题1】When you are waiting for the bus, you should wait   .