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In this unlikely place, researchers are putting the seeds from flowering plants and trees in a sleeplike state. Many years from now, other workers will wake the sleeping seeds up to plant them 【小题1】they are most needed. These seeds are【小题2】the legendary Rip Van Winkle, who fell asleep under a tree and woke up 20 years later.
The small farm, called the Greenbelt Native Plant Center, is part of a global effort to save【小题3】(threaten) plants and trees. Around the world, native plants are being crowded out by invasion newers. Native plants have less room to grow now【小题4】a result of the growth and spread of cities. And global warming is making some places hotter, drier, or different from【小题5】native plants are used to.
Experts used to think【小题6】possible to protect big-city plants such as American bittersweet because growth space is limited in urban environments. Crowding increases petition between natives and invaders, and the latter often win the battle.
【小题7】, scientists have found ways【小题8】fighting back. So far, workers at the Greenbelt Native Plant center【小题9】(gather) seeds from about 300 of those plants and put them in a sleeplike state. When【小题10】(plant) in the future ,these seeds could help restore damaged parkland and forests.Where like threatened as what it however of have garthered planted
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(答案→)Where like threatened as what it however of have garthered planted
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