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        1. leap

          1)n.a(chǎn) sudden jump which is high or over a distance

          e.g.The horse crossed the river with a ________.

          2)n.a(chǎn) large increase in number or amount

          e.g.There has been a sudden ________ in oil prices.

          3)v.to jump through the air very high or over a distance

          e.g.The prisoner ________ over the wall and ran away quickly.

          4)v.to move or act quickly

          e.g.When she heard the knock on the door, she ________ to her feet.

          5)v.to increase suddenly

          e.g.Unemployment(失業(yè))has ________ up to 10%.

          答案:1)leap;2)leap;3)leapt;4)leapt;5)leapt
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