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托福阅读:大米草 Spartina

2016-04-25 17:02:59来源:网络

  为了帮助大家学习托福阅读相关背景知识,更快提高托福阅读成绩,新东方在线托福网为大家带来托福阅读:大米草 Spartina一文,希望对大家托福备考有所帮助。更多精彩尽请关注新东方在线托福网!

  托福阅读:Spartina

  P1: Spartina alterniflora, known as cordgrass, is a deciduous, perennial flowering plant native to the Atlantic coast and the Gulf Coast of the United States. It is the dominant native species of the lower salt marshes along these coasts, where it grows in the intertidal zone (the area covered by water some parts of the day and exposed others).

  难词解析:

  deciduous adj. 落叶的;短暂的

  perennial adj. 不断出现的;多年生的

  dominant adj./n.处于支配地位的;占优势的人

  expose v. 使显露;揭露

  难句解析:

  Spartina alterniflora, (known as cordgrass, ) is a deciduous, perennial flowering plant native to the Atlantic coast and the Gulf Coast of the United States.

  大米草,俗称网茅,是一种落叶的多年生开花植物,原产自美国大西洋沿岸和墨西哥湾地区。

  P2: These natural salt marshes are among the most productive habitats in the marine environment. Nutrient-rich water is brought to the wetlands during each high tide, making a high rate of food production possible. As the seaweed and marsh grass leaves die, bacteriabreak down the plant material, and insects, small shrimplike organisms, fiddler crabs, and marsh snails eat the decaying plant tissue, it, and excrete wastes high in nutrients. Numerous insects occupy the marsh, feeding on living or dead cordgrass tissue, and redwing blackbirds, sparrows, rodents, rabbits, and deer feed directly on the cordgrass. Each tidal cycle carries plant material into the offshore water to be used by the subtidal organisms.

  难词解析:

  productive adj. 生产力高的;富有成效的

  break down 故障;崩塌;中断

  organism n. 微生物

  fiddle v./ n. 不停摆弄;调试;弦乐器

  snail v./ n. 蜗牛;缓慢行动

  excrete v. 排泄;分泌

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