Her life ____________  a lot in the last few years.

A. changed   B. is changing  C. has changed  D. have changed

Now satellites(卫星)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(大气), because this is where the weather forms(形成). They send these pictures to the weather station. So meteorologists(气象专家)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 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 3 or 5 days. Soon, perhaps , they may forecast the weather for a week or more ahead(提前)

1.Satellites travel__________.

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

3.Meteorologists forecast the weather________.

4.Maybe we’ll soon be able to forecast the weather for _______.

5.The main idea of this passage is that satellite is now used in______.

We kids have different ways to get in touch with each other now. And for the old, they’d like to go to the market or     26      each other’s houses, but for the young, we kids needn’t follow the     27     of doing so.

The easiest way for us to get in touch and make    28     is to use the Internet services, like QQ. A lot of websites such as www.qq.com have     29    in the last few years and offered such kinds of     30     for free. So we can make friends    31     through the Internet. Maybe we do not    32    all these “friend” well. We add friends only    33    we seem cooler with more friends online.

Then how do we kids keep in touch with friends online? We make it by posting our     34      to each other. At times , “friends”     35     “be missing” for months without a message. Is this the friendship in the 21^st century?

Of course, using these Internet services is not     36    for saying “ Hi, what’s up?” Some of us have found long-lost classmates and friends     37    these websites. And at times we     38  a time to go to a movie or get together. What’s more, we kids can      39     our friends’ favourite music when we are on the Internet.

Believe it or not, these Internet services will be    40     for a while, and it is really a convenient way for us to keep in touch.