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
2024-08-01
17
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] 【D4】
选项
答案
K
解析
根据句子结构可知,该句缺主语,此处应填入复数名词。结合句意“时间一长,来自两株作物的______便长到一起”可知,此处只有K)parts能同时涵盖嫁接与被嫁接的部分,故K)为答案。
转载请注明原文地址:https://tihaiku.com/zcyy/3701002.html
相关试题推荐
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butman
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butman
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butman
Weoftenthinkofagricultureasplantingseedsandharvestingcrops.Butman
NewZealandisfamousforitsagriculture.Mostoftheexportscomefromthe
NewZealandisfamousforitsagriculture.Mostoftheexportscomefromthe
NewZealandisfamousforitsagriculture.Mostoftheexportscomefromthe
NewZealandisfamousforitsagriculture.Mostoftheexportscomefromthe
NewZealandisfamousforitsagriculture.Mostoftheexportscomefromthe
NewZealandisfamousforitsagriculture.Mostoftheexportscomefromthe
随机试题
Howexerciseaffectsbodyweightisoneofthemoreintriguingandvexingis
Fundingpublictransitisoneofthebiggestproblemsfacingcitiestoday.Ofte
非洲的大多数农民都使用多年来一直使用的同样种子,这和发达国家的农民不同,这种种子没有得到改良,无法抵抗疾病和耐旱灾。Unlikefarmersinadva
有关CT检查的辐射特点,正确的是A.同样的照射条件下,CT检查比普通X线检查的辐
牛奶的高温短时间巴氏消毒法是()A.63℃,1分钟 B.70℃,30秒
A.麻黄汤B.桂枝汤C.小青龙汤D.华盖散E.桂枝加桂汤能解肌发表,调和营卫的方
下列哪项属于环境敏感区?A.红树林 B.自然保护区 C.沙尘暴源区 D.生
C
【背景资料】 某机电公司承建某市新建一座油库的机电安装工程任务。工程内容包括:
男,22岁,高热1周应用抗生素治疗无效。胸骨压痛明显,肝脾肋下未触及。入院次日起
最新回复
(
0
)