Millions of people around the world cook their food on fire every day. People must spend lots of money on cooking fuel. However, there is a much easier and cheaper way to cook food using energy from the sun.

Sun-cookers have been used for centuries. A Swiss scientist made the first sun-cooker in 1777. Today, people are using sun-cookers in many countries around the world. People use them to cook food and to heat drinking water.

There are three kinds of sun-cookers. The first is a box cooker. It is designed with a special wall that collects sun-shine into the box. A box cooker is good for slow cooking of a lot of food.

The second kind of sun-cooker is a panel cooker. It has several flat walls that concentrate the sun-shine on the food. People can build panel cookers quickly. They do not cost much. In Kenya, for example, panel cookers cost just two dollars.

The third kind of sun-cooker is a parabolic cooker. It has rounded walls that concentrate sunlight into the bottom of the cooker. Food cooks quickly in parabolic cookers. However, these cookers are hard to make. They must be moved again and again to follow the sun. Parabolic cookers can also cause burns and eye injuries if they are not used correctly.

You can make sun-cookers from boxes or heavy paper. They will not catch fire. Paper burns at 232℃. A sun-cooker never gets hotter than that. Sun-cookers cook food at low temperatures over long periods of time. This allows people to cook food and do other things at the same time.

1.What does the underlined word fuel mean?

A．燃料             B．菜谱             C．调料             D．粮食

2.If you want to cook food quickly, which kind of sun-cooker is your best choice?

A．a box cooker                           B．a panel cooker

C．a parabolic cooker                      D．fire cooker

3.Which kind of sun-cooker costs very little?

A．a box cooker                           B．a panel cooker

C．a parabolic cooker                      D．fire cooker

4.Which of the following is TRUE?

A．The first sun-cooker was made by a Swiss soldier.

B．Sun-cookers often get hotter than 232℃.

C．Parabolic cookers can be dangerous sometimes.

D．It is more expensive to cook with a sun-cooker than on fire.

5.What is the best title of this passage?

A．How to Be a Good Cook?                  B．Cooking Meals With the Sun

C．How to Save Energy?                     D．Different Ways of Cooking

—Where is my bag? I can’t find it.

—Don’t worry. It must be         in your room.

A person has been badly injured in a car accident. It is necessary to give him a transfusion (输血) because he has lost much blood in the accident. However, special care must be taken in selecting new blood for him. If the blood is too different from his own, the transfusion can kill him.

There are four basic blood groups: A, B, AB and O. A single test can tell us a person’s blood group. Everybody is born with one of these four blood groups. People’s blood group, like hair colour, is inherited (继承) from parents.

Because the substances contained in each group are different, transfusion must be given carefully. Basically, A and B cannot be mixed. A and B cannot receive AB, but AB may receive A or B. O can be given to any other group, so it is often called the universal donor. On the contrary, AB is sometimes called the universal recipient (接受者). However, before being given the transfusion, patients usually receive only salt or plasma (血浆) until their blood can be matched as exactly as possible. In this way, it is possible to avoid any bad results of the transfusion.

There is a relationship between our blood groups and our nationalities. Among the Europeans, about 42 percent are blood group A while 45 percent are blood group O. The rarest is blood group AB. However, some American Indian groups are nearly 100 percent blood group O.

1.Which of the following shows the correct relationship in blood transfusion? (→ =" giving" blood to)

2.Usually, before being given a transfusion, ________.

A．a person needs to receive salt or plasma first

B．a person needs to have a good rest

C．a person needs to have a lot of food and water

D．a person needs to find the person with the same blood group as him

3.The third most common blood type among the Europeans is _______.

A．A                B．B                C．AB               D．O

4.Which is NOT right according to the passage?

A. A person’s blood group depends on his parents.

B. There is only one kind of blood group in a person’s body.

C. About 13 percent of the Europeans have blood group AB.

D. Most of American Indians can be universal blood donors.

5.Which is the best title for the passage?  

A．Blood transfusion                       B．Blood groups

C．Car accidents                          D．Blood group and nationalities

Have you ever complained why life is so tiring? Does the sky sometimes seem dark to you? Are your studies sometimes not successful? Well, friends, cheer up and smile all the time. If you see the world with your warm heart, you will find the whole world smiles to you.

While in school, sometimes you are tired of your lessons, but have you ever noticed the happy smile on your teacher’s face when you did a good job?

One day it is fine. Just before you want to go out, it suddenly starts to rain. Maybe you would feel very sad and start complaining about the weather. But dear friends, why don’t you sit down and listen to the concert that the nature offers you? And with the timely rain, crops in the fields will grow better and better and farmers will have a good harvest.

Although everyone wants to succeed in what he tries to do, sometimes failure can’t be avoided. I think failure is not terrible, and the terrible thing is what we are afraid of it and give up hope. When we face failure, we must be confident in ourselves, draw a useful lesson from it and try our best to finish what we have decided to do. As a popular saying goes, “Failure is the mother of success.”

Attitude decided everything. With an optimistic(乐观) attitude life is easy and pleasant. Let’s smile whatever we meet and the whole world will smile to us.

1.People sometimes complain_______.

A．the sky is always dark

B．their studies are successful

C．they see the world with their heart

D．life is tiring

2.If there is a timely rain, ______.

A．you want to go out

B．you can listen to the concert

C．crops in the fields will grow better

D．farmers can’t have a good harvest

3.When we face failure, we _________.

A．must be confident in ourselves

B．shouldn’t be afraid of it

C．shouldn’t give up hope

D．All of the above

The flowers ________ every day, or they will die.

A. must water     B. can be watered

C. should water    D.must be watered