在PowerPoint 中，要在选定的幻灯片中占位符输入文字，只要_____。 - 查题网

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成人高等教育 / 计算机应用基础

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在PowerPoint 中，要在选定的幻灯片中占位符输入文字，只要_____。

A、
单击占位符，然后直接输入文字
B、
先删除占位符中的文字，然后输人文字
C、
选中幻灯片，直接输入文字
D、
先删除占位符，然后输入文字

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计算机应用基础

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50、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 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.统考英语阅读理解

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