Jamey says the drone program should give researchers a low-cost way of understanding storms better, and improve computer-based forecasting. The drone can measure atmospheric conditions, send live video to forecasters, and help search for people hurt in storms. “Our real goal is to try to develop systems that are really helpful and there may be the possibility of replacing weather balloons,” Jamey says.

　　1. Scientists are developing drones with the purpose of ____.

　　A. helping improve weather predictions

　　B. better examining the earth’s atmosphere

　　C. replacing weather balloons and satellites

　　D. gathering information to detect air pollution

　　2. Drones are different from other devices because ____.

　　A. drones can fly in the sky at any altitude we need

　　B. other devices can’t offer accurate weather information

　　C. drones help do research on violent storms in remote areas

　　D. drones help predict weather changes in the following hours

　　3. What can we know from the last paragraph?

　　A. Scientists will spend large amounts of money building drones.

　　B. Weather balloons may be replaced by drones some day.

　　C. The drone program has not been recognized by meteorologists.

　　D. The drones can’t be used in extreme weather conditions.

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