单选题 To find out what the weather is going to be, most people go straight to the radio, television or newspaper to get an expert weather forecast. But if you know what to look for, you can use your own senses to make weather predictions (预测).
There are many signs which can help you. For example, in fair weather the air pressure is generally high. The air is still and often full of dust. Faraway objects may look misty. But when a storm is gathering, the pressure descends and you are often able to see things more clearly. Sailors took note of this long ago and came up with a saying "The farther the sight, the nearer the rain."
Your sense of smell can also help you detect weather changes. Just before it rains, odors become stronger. This is because odors are suppressed (抑制) in a fair, high-pressure center. When a bad weather low (低气压去) moves in, air pressure lessens and odors are released.
You can also hear an approaching storm. Sounds bounce off heavy storm clouds and return to earth with force. An old saying describes it this way:" Sound travelling far and wide, a stormy day will betide (发生)."
And don"t laugh if your grandmother says she can feel a storm coming. It is commonly known that many people feel pains in their bones when the humidity grows, the pressure drops, and bad weather is on the way.