It’s important to prepare(准备) for earthquakes because you don’t know where you will be when an earthquake happens. Earthquakes may happen at any time, so prepare some things for your home, office and car.

    1. Clothes.

    If you live in a cold place, you must keep warm. You might not have heat after an earthquake.

Think about your warm clothes.

    2.Flashlights(手电筒) and spare batteries.

    Keep a flashlight beside you bed, at your office and in your car. Do not use matches(火柴) after an earthquake until you are sure that no gas leaks(气体泄漏).

    Prepare a radio and some spare batteries. Most telephones will be out of order, so radios will be your best source of information(信息来源).

    3. Food and medicine.

    It’s always a wonderful idea to keep some food on hand. For example, some biscuits, some canned food, milk and some other drinks for at least 72 hours. You’d better get some necessary medicine for your family.

    4.Water.

    A person needs at least 1/2 gallon(加仑) of water daily just for drinking. Store at least 1 gallon of water for a person every day and be prepared for 72 hours. It is suggested that you buy bottled water. Do not open the bottle until you need it. Also, do check the “use by”date.

1.Why should people prepare themselves for an earthquake?

A.           Because earthquakes can be know before they happen.

B.           Because earthquakes usually take place in the neighborhood.

C.           Because we don’t know when and where an earthquake will happen.

2.If you live in a cold place, you should prepare _________.

      A. some hot water        B. some warm clothes       C. some batteries

3.According to the article we know that ___________.

A.           we need to prepare some things only at home

B.           a telephone is the most important source of information

C.           flashlights but not matches are first used after earthquakes

4.You should prepare all of the following except ________.

      A .milk               B. fresh vegetables           C. biscuits

5.About the water, which description is RIGHT?

      A.A person should drink at least 1 gallon of water in a day.

      B. You shouldn’t open the bottled water until you need it.

      C. You’d better keep some hot water for 72 hours.

 

Do you know how to keep fish at home?

The fish need room. They must not be crowded（拥挤）. Fish need oxygen(氧气). Fish get it from water in the tank. There must be enough water for all fish in the tank. So the size of the tank is important..

In the tank many people put small plants(植物). They give oxygen to the water. Plants help in other ways, too. Fish can nibble(轻咬)on the plants. They hide in the plants and sleep, lay eggs there.

Both the plants and fish need light. You can put near a window. It will get light there. But remember: a window may let cold air in. The cold can kill(杀死) your fish. Too hot water can kill your fish, too.

The fish need food and you should feed them every day. Giving them too much food is bad. It will make the water dirty. However, the fish should get just enough food. They should finish the food in 10 minutes. No extra(多余) is left. When this happens, the amount(数量)of food is right.

(   )16. A tank near the window may NOT be good for pet fish because________.

A. no air can get in through the window   B. pet fish will jump out of the window

C. plants in the tank will grow too big     D. cold air may make the water too cold

(   )17.________is very important to pet fish.

A.  Water    B.  Sunlight   C. The size of the tank      D. All the above

(   )18. Which of the following may cause（导致） pet fish to die?

A. Too little room for fish.             B. The plants in the tank.

C. The light through the window.        D. A lot of water in the tank.

(   )19. The word "this" in the last paragraph refers to(指的是)________.

A. giving pet fish too much food            B. giving pet fish too little food

C. giving pet fish the right amount of food    D. giving pet fish enough water

(   )20. This passage mainly talks about______________.

A.why fish must be put in a glass tank   

B. how people should keep their pet fish

C. what kind of plants is good for pet fish

D. how much food should we give to pet fish

 

We live in the computer age. People use computers to do much of their work. But few people know how to look after them. Remember the following when you use your computer:

1.Keep your computer in a cool, dry room. Too much or too little heat is bad for computers. Damp(潮湿) is also bad for them.

2.Do not let people smoke near your computer. Smoke of all kinds is very bad for many parts of a computer.

3.Do not eat or drink when you are near your computer. Pieces of food and a little water in the keyboard are also bad for a computer.

4.Keep your screen clean and do not have it too bright. They are bad for your eyes. Make sure the screen is not too far from or too near your eyes. Some people use different glasses to protect their eyes when they use a computer.

1.Computers can          people to do a lot of work.

        A.use       B.help     C. make       D.take

2.Few people know how to          their computers.

        A.look at     B.try out    C.look for   D.take care of

3.A computer works well at a temperature of         .

        A.0℃      B.-5℃      C.20℃            D.35℃

4.Smoke is not good for many parts of a computer, is it?

        A.Yes,it is.  B.No,it isn't.   C.Yes,a little.  D.Not at all.

5.A dirty screen or a very bright screen is    for your eyes.

        A.bad     B.good     C.useful        D.helpful

 

A Simple Scientific Experiment

Below is a description of a single scientific experiment. It shows us how iron reacts ( 反应) with air and with water. Aim : To find out if iron rusts( 生锈) (a) in dry air ; (b) in water that has no air in it ( air- free water) ; (c) in ordinary water. Materials : 3 clean iron nails ( 铁钉) ; test tubes ; test tube holder ; cotton wool ; oil ; Bunsen burner.

Iron in dry air Method (1) Put some iron nails at the bottom of a test tube. (2) Push some cotton wool down the tube. (3) Leave the tube for one week. Result After one week, the nails have not rusted. Conclusion Iron does not rust in dry air. Iron in air-free water Method (1) Half-fill a test tube with water. (2) Boil the water for three minutes. (This makes sure there is no air in the water. (3) Put two or three clean nails in the water.

(4)Add some oil to the water. (This will keep air out of the water.) (5) Leave the tube for one week. Result The nails do not rust in the tube with air-free water. Conclusion Iron does not rust in air- free water. Iron in ordinary water Method (1) Half –fill a test tube with water and add two or three clean nails. (2) Leave the tube for one week. Result The nails rust in the tube with ordinary water. Conclusion Iron rusts in ordinary water. (238 words)

1.In the first part of the experiment the cotton wool is most probably used to ______________.

   A. keep the air dry                            B. keep the tube wet

   C. make the nails rust                          D. keep the tube clean

2.What are necessary steps to make sure the water in the tube is air free?

①Leave half a tube of water in it              

②Boil the water for some time

③Put some clean iron nails in the tube           

④Add some oil to the water

  A. ①②                  B. ①③                 C. ②③                D. ②④

3.We can conclude from the experiment that only ____________ makes iron rusty.

A. dry air       B. cotton wool           C. ordinary water         D. air-free water

 

Because earthquakes happen without warning, it’s important to take steps now to prepare. Because you don’t know where you will be when an earthquake happens, prepare some supplies for your home, workplace, and car.

1. Water.

A person needs at least 1/2 gallon of water daily just for drinking. Store at least1 gallon of water per person per day and be prepared for a 72-hour period. It’s suggested that you buy bottled water. Keep bottled water in its original container and do not open it until you need to use it. Also, do check the “use by” date.

2. Food.

It’s always a practical idea to keep a supply of non-perishable(不易腐烂的) food on hand. Have an enough supply of canned food, dried milk, dried fruits, non-salted nuts and canned juices for at least 72 hours.

3. Flashlights and spare batteries.

Keep a flashlight beside your bed, at your place of work, and in your car. Do not use matches or candles after an earthquake until you are sure that no gas leaks.

Prepare a battery –powered radio and spare batteries. Most telephones will be out of order, so radios will be your best source of information.

4. Clothes.

If you live in a cold place, you must think about warmth. You might not have heat after an earthquake. Think about your clothing and bedding supplies.

1. You should prepare all of the following except _______________.

    A. canned juices    B. dried fruits     C. fresh vegetables   D. dried milk

2. If you live in a cold place, you should prepare _______________ .

    A. some warm clothes and bedding supplies                   B. some hot water

    C. some batteries                                        D. some flashlights

3. According to the article we know that _________________.

    A. clothes are used to protect your head 

B. a telephone is the most important prepared thing

    C. flashlights but not matches are first used after earthquakes

D. we need to prepare some supplies only at home