节俭是传统美德。经济学家凯恩斯则提出了节俭悖论，认为节俭对个人、家庭来说是美德，而对社会来说则意味着支出减少，导致有效需求不足，阻碍经济发展，造成失业增加，收入减少。这启示我们 [ ]
①消费决定生产，政府应适当刺激消费
②个人应该坚持节俭，社会应该扩大消费
③应重视消费对生产的影响，积极引导消费
④既要勤俭节约，又要适度消费
A．③④
B．①②
C．①④
D．②③
答案：A
Do your spirits soar (猛增) on a sunny day? Do you relax at the sound of flowing water? Some scientists suggest that these contacts with nature are good for your health. In one study, hospital patients with a view of trees had shorter hospital stays and less need for pain medications. Another study indicated that prisoners with a view of the outdoors had fewer doctor visits. “Why do we desire nature? Maybe we’re programmed to need it, since our ancestors’ survival was so dependent on their connection with nature,” suggests biologist E.O. Wilson. Want to find out if contact with nature improves your outlook on life? Try a few of these ideas. Hang out a bird feeder and watch the birds that visit it. Sit down in the backyard or a nearby park. Close your eyes. What do you hear? Birds singing? The wind in the trees? Crickets (蟋蟀) chirping? Find an anthill. Sit down and watch the ants work. Take a walk right after a rainstorm. What looks different? Smells different? Go barefoot on a sandy beach. Open the curtains and the window, if the weather allows it. On a windy day, watch the trees. Go to a creek, river or park fountain. Listen to the sound of water in motion. Camp out in the backyard or at a nearby state park. Use a tent or sleep on the ground. Find a wide-open space to study the stars. Learn about the different constellations (星座). Raise a garden. Or plant some seeds in a flowerpot. Go hiking with your family. Talk about all of the colors you see in nature. Take a camera and capture your nature experience. 小题1:From Paragraph 2 we can learn that ______.
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