单项选择题

Ancient man attempted to change the weather by using magic. When experience taught him this was impossible, he tried to forecast weather conditions. Even earlier than 1 000 B. C. there were seers in Babylon--and priests clever enough to denounce as cheaters who predicted the weather a year in advance.
Some forecasters used .methods that seem to have no connection with the actual factors control ling the weather. Chickens and other animals were sacrificed and their intestines (肠) poked to find signs indicating rain or drought.
Somewhat more scientific were predictions based on vegetation: "onion's skin very thin, mild winter coming in. Onion's skin thick and tough, coming winter code and rough."
Insects and animals were also favorite clues: when the glowworm lights his lamp, then the air is always damp." "If spiders forsake their cobwebs, the weather win for certain break." "If frog remained in pools, the weather would be fine. If they were seen on rocks, rain and cold were due". It's difficult to say whether this rhyme should be taking seriously:" Hark, hear the asses bray, Me thinks we'll have some rain today."

In the spider rhyme, the weather is breaking could mean （）

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