试题

试题 试卷

logo

题型:阅读选择 题类:常考题 难易度:普通

山东省聊城市莘县2019-2020学年八年级上学期英语期末考试试卷

阅读理解

    Now satellites(卫星)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 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 meteor- ologists 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 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 receive satellite pictures D、while they study satellite pictures
(4)、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
(5)、The main idea of this passage is that satellite 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
举一反三
阅读理解

    Some days, don't you think, "Wouldn't it be nice if the laundry would just do itself?” Self-cleaning clothes may sound crazy. But Australian researchers have found a way to make something like this possible!

    A team at RMIT University in Melbourne, Australia, found a way to put special nanostructures (纳米结构) into clothing, which can then clean the clothes. When sunlight hits the nanostructures, they break down the dirt and stains (污渍) that don't belong on your clothes.

    The nanostructures don't break down the actual clothing because cotton and the other clothing materials are too strong to be broken down. According to CNN, the researchers cover the clothing in a solution made of silver and copper (铜) nanostructures. All it takes is 40 minutes of sunlight and your clothes will look as good as new.

    So if you spill on yourself during lunch, you can step outside for a walk, and it will be clean by the time you go inside. It not only makes your life easier, but it can also be good for the environment.

    According to the US Department of Energy, the average load of laundry uses about 25 gallons (about 94 liters) of water. Water is a very important resource, so using less of it to wash clothesis better for the environment. But one of the scientists at RMIT University knows more needs to be done.

    “There's more work to do before we can start throwing out our washing machines,” said Dr Rajesh Ramanathan, “but this is a strong foundation .”

    So what's the next step? Ramanathan wants to either start selling the solution by itself or convincing clothing makers to treat the clothing with the solution while clothes are being made.

返回首页

试题篮