Now satellites are helping to forecast（预报）the weather. They are in space, and they can reach any part of the world. The satellites take pictures of the atmosphere（大气）, because this is where the weather forms（形成）. They send these pictures to the weather stations. So meteorologists（气象学家）can see the weather of any part of the world. From the pictures, the scientists can often say how the weather will change.

 Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteorologists compare（比较）them with earlier ones. Perhaps they may find that the clouds have changed during the last few hours. This may mean that the weather on the ground may soon change, too. In their next weather forecast, the meteorologists can say this.

 So the weather satellites are a great help to the meteorologists. Before satellites were invented, the scientists could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for three or five days. Soon, perhaps, they may be able to forecast the weather for a week or more ahead（提前）.

1.Satellites travel _____________.

A. in space               B. in the atmosphere

C. above the ground       D. above space

2. Why do we use the weather satellites to take pictures of the atmosphere? Because __________.

A. the weather satellites can do it easily

B. clouds form there

C. the weather forms there

D. the pictures can forecast the weather

3.Meteorologists forecast the weather __________.

A. when they have received satellite pictures

B. after they have compared new satellite pictures with earlier ones

C. before they received satellite pictures

D. during they study satellite pictures

4.The main（主要的）idea of this passage is that satellites are now used in _________.

A. taking pictures of the atmosphere

B. receiving pictures of the atmosphere

C. doing other work in many ways

D. weather forecasting

 

Now satellites are helping to forecast（预报）the weather. They are in space, and they can reach any part of the world. The satellites take pictures of the atmosphere（大气）, because this is where the weather forms（形成）. They send these pictures to the weather stations. So meteorologists（气象学家）can see the weather of any part of the world. From the pictures, the scientists can often say how the weather will change.

 Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteorologists compare（比较）them with earlier ones. Perhaps they may find that the clouds have changed during the last few hours. This may mean that the weather on the ground may soon change, too. In their next weather forecast, the meteorologists can say this.

 So the weather satellites are a great help to the meteorologists. Before satellites were invented, the scientists could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for three or five days. Soon, perhaps, they may be able to forecast the weather for a week or more ahead（提前）.

Satellites travel _____________.

A. in space               B. in the atmosphere

C. above the ground       D. above space

Why do we use the weather satellites to take pictures of the atmosphere? Because __________.

A. the weather satellites can do it easily

B. clouds form there

C. the weather forms there

D. the pictures can forecast the weather

Meteorologists forecast the weather __________.

A. when they have received satellite pictures

B. after they have compared new satellite pictures with earlier ones

C. before they received satellite pictures

D. during they study satellite pictures

The main（主要的）idea of this passage is that satellites are now used in _________.

A. taking pictures of the atmosphere

B. receiving pictures of the atmosphere

C. doing other work in many ways

D. weather forecasting

Now satellites are helping to forecast（预报）the weather. They are in space, and they can reach any part of the world. The satellites take pictures of the atmosphere（大气）, because this is where the weather forms（形成）. They send these pictures to the weather stations. So meteorologists（气象学家）can see the weather of any part of the world. From the pictures, the scientists can often say how the weather will change.
Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteorologists compare（比较）them with earlier ones. Perhaps they may find that the clouds have changed during the last few hours. This may mean that the weather on the ground may soon change, too. In their next weather forecast, the meteorologists can say this.
So the weather satellites are a great help to the meteorologists. Before satellites were invented, the scientists could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for three or five days. Soon, perhaps, they may be able to forecast the weather for a week or more ahead（提前）.
【小题1】Satellites travel _____________.

A．in space	B．in the atmosphere
C．above the ground	D．above space

【小题2】 Why do we use the weather satellites to take pictures of the atmosphere? Because __________.

A．the weather satellites can do it easily

B．clouds form there

C．the weather forms there

D．the pictures can forecast the weather

【小题3】Meteorologists forecast the weather __________.

A．when they have received satellite pictures

B．after they have compared new satellite pictures with earlier ones

C．before they received satellite pictures

D．during they study satellite pictures

【小题4】The main（主要的）idea of this passage is that satellites are now used in _________.

A．taking pictures of the atmosphere

B．receiving pictures of the atmosphere

C．doing other work in many ways

D．weather forecasting

Now satellites are helping to forecast the weather. They are in space, and they can reach any part of the world. The satellites take pictures of the atmosphere, because this is where the weather forms. They send these pictures to the weather stations. So meteorologists（气象学家）can see the weather of any part of the world. From the pictures, the scientists can often say how the weather will change.

Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteorologists compare（比较）them with earlier ones. Perhaps they may find that the clouds have changed during the last few hours. This may mean that the weather on the ground may soon change, too. In their next weather forecast, the meteorologists can say this.

So the weather satellites are a great help to the meteorologists. Before satellites were invented, the scientists could forecast the weather for about 24 or 48 hours. Now they can make good forecasts for three or five days. Soon, perhaps, they may be able to forecast the weather for a week or more ahead（提前）.

56. Satellites travel _____________.

A. in space                              B. in the atmosphere

C. above the ground                   D. above space

57. Why do we use the weather satellites to take pictures of the atmosphere? Because __________.

A. the weather satellites can do it easily    B. clouds form there

C. the weather forms there              D. the pictures can forecast the weather

58. Meteorologists forecast the weather __________.

A. when they have received satellite pictures

B. after they have compared new satellite pictures with earlier ones

C. before they received satellite pictures             

D. during they study satellite pictures

59. Maybe we’ll soon be able to forecast the weather for ________.

A. one day                                   B. two days

C. five days                                 D. seven days or even longer

60. The main（主要的）idea of this passage is that satellites are now used in _________.

A. taking pictures of the atmosphere        B. receiving pictures of the atmosphere

C. doing other work in many ways     D. weather forecasting

 

A．The great impact and progress in genetic engineering          B．Worries about privacy protection          C．Worries about medical use of genetic engineering          D．Genetic knowledge helps to predict diseases          E．Genetic knowledge may not be properly used          AB．The application of genetic engineering in the medical fields

 

1.__________

Current research into the human gene system is helping us understand why people have predispositions（易患某病倾向）to certain diseases．Knowing our genetic makeup can help us to judge whether or not we may be stricken by particular illness, such as cancer．Even before birth, we are able to do genetic screenings to determine what a child's genetic disorder will be．Scientists have already isolated and identified the genes responsible for the more than 4,000 genetic diseases that affect human beings．

2.__________

The implications of this knowledge are astonishing. In addition to predicting genetic predisposition towards diseases, gene therapies may provide new treatments or cures for serious diseases．Millions of people already use genetically engineered drugs to treat heart disease, cancer, AIDS, and strokes （中风）. But with the research that is now being conducted, we may find cures to many more diseases．In the near future, genetic experimentation will also allow parents to select the traits of their children. Genetic traits that determine height, weight, eye and hair color will be able to be controlled, and many parents are excited about this potential.

3.__________

Many people, however, are unwilling to accept the possibilities genetic research allowsFor example, one reason some women do not use the largest genetic testing for breast cancer is because they are afraid they will be discriminated against．Another problem is that many people do not want to discover their weakness．What if they learn that they have a disease for which there are no medical cures? How will such knowledge affect their lives? Do people really want to know what they will die of?

4.__________

Many people believe that history has not always shown human decision-making to be bright when it comes to ethical（道德的）choices. Jeremy Rifkin is probably the most well known opponent of genetic engineering. He believes that humans are not responsible enough to experiment with genes and should not “play God” He asks, “Just because it can be done, does that mean it should be done?” He points out that our society will eventually look and act the same if parents select the traits of their children, and he questions the desirability of such a society．

5.．__________

One of the fears expressed about genetic experimentation involves privacy. Already blood sample taken from patients in hospitals have been used for genetic research without the patients’ permission. Most people would agree that one’s health and genetic makeup are private concerns. But if insurance companies gain access to this information, it could have a large impact on insurance coverage or costs; if employers gain access to the information, it could have a large impact on hiring or promotion decisions. The possibilities for discrimination are obvious．