Technology isn’t the only way 【小题1】 (forecast) the weather. Nature has 【小题2】 (it) ways, too. Unusual animal behavior, for example, can indicate whether it’s cold, wet weather that’s on the way 【小题3】 a hot, dry period. If fish are jumping 【小题4】 (high) than usual or frogs are croaking more loudly, it may rain. And next time you look up 【小题5】 the sky, don’t just look for rain clouds, but also for birds. If they are flying low, grab your umbrella. It is also said that 【小题6】 (mouse) and snakes head for safer ground several days before 【小题7】 earthquake, while dogs 【小题8】 (avoid) the beach may be a sign that a tsunami 【小题9】 (approach). Of course, although these things may suggest something bad is going to happen, they won’t tell us when and where. So, for accurate and 【小题10】 (rely) predictions, it’s best to check an official, scientific report.

In the late April 2014, a violent storm swept through the southern Unite States, 【小题1】 (destroy) more than $1billion in property and killing 35 people. But a group of migratory birds in eastern Tennessee sensed the oncoming mess and left long before the first clouds arrived. A year earlier, the team had tagged golden-winged warblers(莺) with leg trackers 【小题2】 (study ) their annual migrations to South America. Two days before the storms 【小题3】 (strike), five golden-winged warblers sipped away traveling nearly 700 kilometers south to the Florida coast.

It is the first time that the birds which normally migrate with the seasons 【小题4】 ( observe） to slip away when a big storm hits. The researchers suspect this 【小题5】 (behave ) occurs only when the threat of injury outweighs the energy costs of a long trip. But nobody knows 【小题6】the birds guessed the storm's severity and left so soon. 【小题7】 (Puzzle)by it, the scientists initially reasoned that delicate changes in weather-atmospheric pressure, temperature, wind speed, cloud cover, or rainfall signaled the upcoming disaster. Yet when they checked weather records, none of these factors waved 【小题8】 (significant) before the storm. Instead, the team assumes that the approaching storms created 【小题9】disorder of infrasounds --- low-frequency sound waves that bird can hear 【小题10】humans can't.

Wildfires can start in forests or on open land, and the flames spread very quickly. Sometimes they start because the weather is hot and dry, but 【小题1】 (most) humans cause wildfires. We can prevent them by carefully 【小题2】 (control) campfires and other outdoor fires.

Other natural disasters are impossible to prevent. A typhoon is a tropical (热带的) storm 【小题3】 starts over the sea. When Typhoon Haiyan hit the Philippines and Vietnam in 2013, the winds reached over 100 kph and caused great damage. Six thousand people 【小题4】 (kill), and more than two million had to leave their homes. Today we can predict these storms, and if we attach importance 【小题5】 weather warnings, we can prepare for them.

Unlike a storm, 【小题6】 earthquake is usually unexpected. A huge earthquake hit Pakistan in October 2015. “The ground was shaking,” said one resident. “But worse than that was the sound of the earthquake. It was 【小题7】 (frighten).” Earthquakes usually don’t last more than a minute, but their influences can be terrible. Buildings fall down and this can sometimes cause fires. It can be very difficult to find 【小题8】 (survive) in the damaged areas.

These are just three examples of 【小题9】 deadly nature can be. But humans can use technology 【小题10】 (make) predictions and work together when things go wrong.