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[A]blossoms[I]accepts [B]pieces[J]firmly [C]composes[K]grow [D]parts[L]desirable [E]securely[M]produce [F]ex
[A]blossoms[I]accepts [B]pieces[J]firmly [C]composes[K]grow [D]parts[L]desirable [E]securely[M]produce [F]ex
admin
2016-10-07
35
问题
[A]blossoms[I]accepts
[B]pieces[J]firmly
[C]composes[K]grow
[D]parts[L]desirable
[E]securely[M]produce
[F]extremely[N]shape
[G]buds[O]joint
[H]agreeable
We often think of agriculture as planting seeds and harvesting crops. But many crops do not come from seeds. Many kinds of trees and plants are grown from【C1】______cut from existing trees and plants. This is called grafting(嫁接).
Farmers cut branches or young growths, called【C2】______, from one plant and place them on a related kind of plant. The branch or bud that is grafted is called a scion(接穗). The plant that【C3】______the graft is called the root stock. Over time, the【C4】______from the two plants grow together. The grafted plant begins to【C5】______the leaves and fruit of the scion, not the root stock.
A graft can be cut in several ways. A cleft graft(割接,劈接), for example, requires a scion with several buds on it. The bottom of the scion is cut in the【C6】______of the letter V. A place is cut in the root stock to accept the scion. The scion is then【C7】______placed into the cut on the root stock. Growth medium is put on the【C8】______to keep it wet and help the growth.
Grafting can join scions with【C9】______qualities to root stock that is strong and resists disease and insects. Some common fruit trees such as sweet cherries have to be grafted.
In an age of high-technology agriculture, grafting is a low-technology method that remains【C10】______important.
【C6】
选项
答案
N
解析
根据句子结构可知,此处应填入名词。根据文意可知,此处讲的是“接穗底部被切成字母V形”,所以[N]shape正确。
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0
专业英语四级
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