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Pat Thompson recommended Mr. Benson to stay in（）
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Ancient sailors and farmers did not have satellites and computers to help them forecast the weather. They observe the sky, winds and clouds. Eventually, patterns emerged and people made up sayings to remember them.We now realize that behind the sayings often lies real science. Here are two time-tested sayings, and the climate reasoning backing them up."When the dew (露水) is on the grass ," rain will never come to pass. " Clear skies at night lower temperatures enough for humidity (湿度) to condense as dew. So a heavy dew forms on a summer night, except a fair day. But "when grass is dry before the morning light, 10ok for rain before night. " This is especially true if temperatures rise during the night as a result of increasing cloud cover. "If night has a fever, it cries in the morning. "If with your nose you smell the day, some weather is on the way. Plants release oil into the atmosphere, and research indicates that the higher the humidity is, the more oils the plants gives off. This produces the distinctive smell many of us recognize when we say: "Smells like rain today. \ If plants gives off more smells, what kind of weather is going to comeIt is going to （）.
30（）
"I would tell anyone who’s thinking about going back to school that it’s not as difficult as you think," says Karen Jonaitis, a woman, last year, at 47, earned a bachelor’s degree in business administration at a college. "I realized that I would not move up in my career without a degree. "A generation ago, Jonaitis would have been a rarity(稀罕)in college. Today about 6 million people aged 25 or older are studying in American institutions of higher learning. Whether they are returning to improve job skills or for the love of learning, adults no longer see age as a deterrent(障碍). Most people jump at the opportunity to do something new. Some of them make changes they’d been thinking about all their lives. Others return to school out of economic necessity.New developments in neuroscience(神经科学)and psychology are confirming that there are few age limits on how much the brain can absorb and for how long--if you stay active. Continuing to learn keeps us mentally in shape and able to learn more. On mental tests, experts discovered, half to two-thirds of the people in their 70s were as intellectually quick as people in their 30s. Those who fell below average tended to be people who had not made a lifelong habit of reading. They also were less physically active.Many adult students say learning is easier for them today. They bring different skills to the classroom, and they’re less upset if something goes wrong. They have a real thirst, a real desire to learn. Older people return to colleges for the following reasons EXCEPT that of（）.
在经济进货批量基本模式下相关进货费用与相关储存成本相等时，存货相关总成本最低，此时的进货批量就是经济进货批量。 ( )
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