首页
登录
职称英语
We often think of agriculture as planting seeds and harvesting crops. But man
We often think of agriculture as planting seeds and harvesting crops. But man
游客
2023-10-10
23
管理
问题
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【D1】______cut from existing trees and plants. This is called grafting (嫁接).
Farmers cut branches or young growths, called【D2】______, 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【D3】______the graft is called the rootstock. Over time, the【D4】______from the two plants grow together. The grafted plant begins to【D5】______the leaves and fruit of the scion, not the rootstock.
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【D6】______of the letter V. A place is cut in the rootstock to accept the scion. The scion is then【D7】______placed into the cut on the rootstock. Growth medium is put on the【D8】______to keep it wet and help the growth.
Grafting can join scions with【D9】______qualities to the rootstock 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【D10】______important.
A) accepts F) desirable K) parts
B) agreeable G) extremely L) pieces
C) blossoms H) gradually M) produce
D) buds I) grow N) securely
E) composes J) joint O) shape [br] 【D8】
选项
答案
J
解析
根据句子结构可知,空格前为定冠词the,此处应填入名词。根据句意及常识可知,生长培养基(Growth medium)有助于嫁接连接处的湿润,促进生长,故应放在接合处,所以选J)joint。
转载请注明原文地址:https://tihaiku.com/zcyy/3086388.html
相关试题推荐
Americandesertsaresometimesquitegreen.________,theycannotsupportcrops.A
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butman
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butman
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butman
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butman
NewZealandisfamousforitsagriculture.Mostoftheexportscomefromthe
NewZealandisfamousforitsagriculture.Mostoftheexportscomefromthe
NewZealandisfamousforitsagriculture.Mostoftheexportscomefromthe
NewZealandisfamousforitsagriculture.Mostoftheexportscomefromthe
NewZealandisfamousforitsagriculture.Mostoftheexportscomefromthe
随机试题
DoestheWorldFaceaFutureofWaterWars?[A]Throughouthistor
[originaltext]HuangYiworksforacompanythatsellsfinancialsoftwareto
【B1】[br]【B3】A、appearanceB、frameworkC、outlookD、structureA词义辨析。framework
网上购物作为一种新的购物方式,近年来在国内被广泛接受,尤其是在年轻人中流行开来。2006年以来,中国网上购物增长速度迅猛。网上购物的特点是购物方式新颖、
A. B. C. D.
超声纵向分辨力是分辨前后两个点最小距离的能力,其理论计算值应是A.λ/4(入波长
凯恩斯认为,人们对货币的需求产生于( )A.经济主体的消费愿望 B.经济主体
共用题干 DomesticViolenceNearlythreein1
在古代印度,能够享受最好教育的是当时的最高种姓()。 A.刹帝利B.吠舍
大型储罐的管道与泵或其他有独立基础的设备连接,应在储罐( )合格后安装。A.充
最新回复
(
0
)