Now satellites are 36 to forecast（预报）the weather. They are in space, and they can 37 any part of the world. The satellites take pictures of the atmosphere（大气），38 this is where the weather forms（形成）. They send these 39 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 40 the weather will change.

Today, nearly five hundred weather stations in sixty countries receive satellite pictures. When they receive new pictures, the meteorologists compare them with earlier 41 . Perhaps they may find that the clouds have changed during the last few hours. This may mean that the 42 on the ground may soon change, too. In their next weather forecast, the meteorologists can say this.

So the weather satellites are a great 43 to the meteorologists. 44 __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 45 forecast the weather for a week or more ahead（提前）.

36.________________

A． help B. to help C. helped D. helping

[单选题]根据下列材料请回答 31～35 题：A．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(大气)，because this is where the weather form．They send these pictures to th

[单选题]Brandy Clark, CFA, has forecast that Aceler, InC., will pay its first divid

[试题]Satellites were launched（）low orbit for weather and military applications.A．on B．around C．in D．with

[单选题]Why do we use the weather satellites to take pictures of the atmosphere?Because______．A．the weather satellites can do it easilyB．clouds form. thereC．the weather forms thereD．the pictures can forecast the weather

[名词解释] 预测(forecast)

[单选题]This forecast predicts______.A． records will be brokenB． skies will be partly cloudy on Sunday and MondayC． there will be no rain in the forecasted periodD． temperatures will be lower than normal for the time of year

[单选题]The Moon and mostartificial satellites travel around the Earth in elliptica

[单选题]This forecast states that winds will______.A． slow down at nightB． be from south to eastC． bring heavy rain on SundayD． be from different directions

[单选题]A．ccording to the forecast the lowest recorded temperature was______.A． 51 degreesB． 65 degreesC． in the upper 60sD． in the mid to upper 70s

[单选题]Meteorologists forecast the weather______．A．when they have received satellite picturesB．after they have compared new satellite pictures with earlier onesC．before they received satellite picturesD．during they study satellite pictures