When people want to know about the weather, they usually go to there radios, TVs, newspapers, or to the Internet. However, you can also find many weather signs among wildlife, because of their highly developed senses. Drops in air pressure（压力） produce an effect on small animals in many ways. Mice and deer are good weather indicators. People who spend a lot of time outdoors have observed that, before a storm, field mice e out of their holes and run around, Deer leave high ground and e down from the mountains.
Birds are especially good weather indicators because they also show the effect of a pressure drop in many ways. For example, some birds bee irritable（急躁的）and quarrelsome and will fight over a piece of bread. Other birds chirp（叽叽喳喳）and sing just before a storm. It seems they know they won’t get another chance for an hour or two. Birds also seek safe places before a storm, You will sometimes see birds settling in trees or gathering together on a wire close to a building. Pre-storm low pressure makes the are so thin that birds have difficulty flying.
It is unusual to see many birds flying overhead in the summertime, rather than during the periods in the spring or autumn. Watch for other weather signs if you see this. If they fly in the wrong direction, they may be flying ahead of a storm.
By paying closer attention to some important signs in nature, we can bee better prepared for any kind of weather.
【小题1】The word“indicators”in paragraph I probably means .A．mapsB．servicesC．signsD．stations【小题2】There will be a storm if birds .A．make more noise than usualB．fly in different directionsC．e down from tall treesD．share a piece of bread【小题3】How can birds sense the ing of a storm? A．By feeling a drop in air temperature.B．By noticing the change of wind directions.C．By feeling a drop in air pressure.D．By noticing the movements of other animals.【小题4】The best title for the text would be .A．Signs of a StormB．Drops in Air PressureC．Animals’Sharp SensesD．Nature’s Weather SignsC
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(答案→)C
解析：文章介绍的正是大自然里的天气预报的征兆和各种迹象。
【小题1】C 推理题。根据第一段第四行Mice and deer are good weather indicators. 是指老鼠和鹿都很好的天气预报的指示者。他们可以预报天气，是天气变化的迹象和征兆。故C正确。
【小题2】A 细节题。根据第二段第三行Other birds chirp（叽叽喳喳）and sing just before a storm.说明A正确。
【小题3】C 细节题。根据第二段1,2行Birds are especially good weather indicators because they also show the effect of a pressure drop in many ways.说明他们能感觉到空气中气压的变化是主要的原因，故C正确。
【小题4】D 主旨大意题。文章介绍的正是大自然里的天气预报的征兆和各种迹象，故D正确。