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Buckeye flowers have different colors, generally yellow, orange and pink. Why do flowers of the same plant have three colors? This is actually the way Buckeye flowers tell bees and bumblebees whether they are popular at this moment. Those flowers with nectar and waiting to be pollinated will appear yellow, which is an irresistible color for insects. When pollination is over, the flowers will slowly turn red, because bees and bumblebees cannot see red, thus the flowers will disappear in their eyes.2. Factory model一声巨响，一条火龙从井底喷出……1976年，唐山一带出现了罕见的地质异常现象，国家地震局为了保证地震检测的准确，派有经验的周海光赶赴唐山，任唐山市地震台台长。周海光与地震局同事超凡去防空洞里勘测，使周海光意想不到的是，洞里不仅气温升高，而且成群的老鼠不停的乱窜。更为严重的是洞内不断有墙壁裂开，且喷出伴有硫磺气味的黄白色的气体，随后，一声震天巨响，周海光立即向市委、市政府作了报告。水位的升高、鱼类的死亡、老鼠的迁徙，尤其是煤矿井下出现了地热喷涌等一系列现象说明大地震即将爆发。周海光在向市政府汇报同时，向全市发出了地震临震警报。然而唐山并没有地震，而是河北大城地区发生了4.2级的地震。这次的误报，使周海光受到了极大的压力。这座古老的城池流出这诸多典故和佳话。Reference: Baidu Encyclopedia DNFTherefore, it is more appropriate to cast shrimps in June-July, and some small shrimps can be cast in autumn. It is better from mid-October to early November, with suitable temperature and high survival rate. You can also eat for another month or two. When the temperature rises in March-April of the following year, you can start feeding, and you can develop large-sized shrimps in June-July. According to our local situation, there was a severe drought in Hubei in August this year. We did not have any rain here for a month in a row. Crayfish hatched earlier in the cave. Most of them hatched in October. In previous years, the shrimp seedlings were not so hot and later.