2. 外语
  3. [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

admin2016-10-07  29
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.
【C1】
选项
答案B
解析 根据句子结构可知，此处应填入名词。根据句意：许多树木和作物都是从已有树木和作物上切下的——长成的，故选[B]pieces。
转载请注明原文地址:https://jikaoti.com/ti/z2BMFFFM
0

专业英语四级

相关试题推荐
随机试题
最新回复(0)