内容正文:
Unit 3 Computers 测试卷
(A卷基础篇)
【人教版】
学校:__________班级:__________姓名:_________ 考号:___________
温馨提示:
本试卷共分第Ⅰ卷和第Ⅱ卷两部分,第Ⅰ卷为选择题;第Ⅱ卷为非选择题;满分为120分,考试时间为100分钟。请同学们将答案写在答题卡上,务必注意你的书写。
第Ⅰ卷
第一部分 阅读理解(共两节,满分40分)
第一节 (共15题;每小题2分,满分30分)
阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项,并在答题卡上将该项涂黑。
A
(陕西省榆林二中2018--2019学年第一学期期中考试)
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 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 24or 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. above space C. above the ground D. in the atmosphere
2. Why do we use the weather satellites to take pictures of the atmosphere?Because _______.
A. clouds form there
B. the weather forms there
C. the weather satellites can do it easily
D. the pictures can forecast the weather
3. Meteorologists forecast the weather _______.
A. without studying satellite pictures
B. before they receive satellite pictures
C. when they have received satellite pictures
D. after they have compared the new satellite