首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
We often think of agriculture as planting seeds and harvesting crops. But many crops do not come from seeds. Many kinds of trees
We often think of agriculture as planting seeds and harvesting crops. But many crops do not come from seeds. Many kinds of trees
admin
2012-09-19
52
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【S1】______cut from existing trees and plants. This is called grafting(嫁接) .
Farmers cut branches or young growths, called【S2】______, 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【S3】______the graft is called the root stock. Over time, the【S4】______from the two plants grow together, the grafted plant begins to【S5】______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【S6】______of the letter V. A place is cut in the root stock to accept the scion. The scion is then【S7】______placed into the cut on the root stock. Growth medium is put on the【S8】______to keep it wet and help the growth.
Grafting can join scions with【S9】______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 hightechnology agriculture, grafting is a lowtechnology method that remains【S10】______important.
A blossoms B pieces C composes D parts
E securely F extremely G buds H agreeable
I accepts J firmly K grow L desirable M produce N shape O join
【S8】
选项
答案
O
解析
转载请注明原文地址:https://kaotiyun.com/show/ha57777K
0
大学英语四级
相关试题推荐
Boy,tourismreallyisabigbusinessthesedays.It’s【B1】______.Itinvolveshotels,transportation,restaurants,shops,andth
A、Findalargerroom.B、Selltheoldtable.C、Buytwoarmchairs.D、Rearrangesomefurniture.D题目询问男士建议怎么做。关键是听到男士说“把旧餐桌搬到厨房怎么样”,
Sadstoriesarenotverynicetoreadabout,butifwethinkandtalkaboutthem,wemaybeableto【B1】______moreaccidents.
Forthispart,youareallowed30minutestowriteacompositiononthetopicTheDayWeWenttoaHospitaltoSeeanAIDSSuffe
Manlivesincommunities.Hissocialexistencerestrictshis【36】incertaindirectionsandextendsitinothers.Society【37】onhi
Acollegeeducationisaninvestmentinthefuture.Butitcanbea【47】one.TheCollegeBoard【48】thatthecostsatafour-yearp
A、Justgetthetreatmentfromthefirstdoctor.B、Takeadifferentkindofmedicine.C、Askanotherdoctorforadvice.D、Togett
Manybusinesses,suchasdepartmentstores,restaurants,hotelsandairlinecompanies,useacreditsystemforsellingtheirpro
Thepoorgirlcouldn’t______fromhertearsanymorewhenhermothershowedup.
A、15%.B、25%.C、27%.D、73%.D选项表明本题考查数字。短文中提到有多少美国公司认为办公室养宠物是有益的,其中提到,AstudyofmajorU.Scompaniesshowedthat73%foundoffice
随机试题
抽油机主机是由底座、减速箱、曲柄、平衡块、连杆、横梁、支架、游梁、驴头、悬绳器、()和各种连接轴承组成。
室性心动过速伴严重血流动力学障碍时,终止发作首选
血清酶活性测定时,通常采用
房屋所有权登记收费住房按套收取,每套收费标准为80元,住房以外的其他房屋按宗定额收取。
10kV及以下装有可燃性油浸电力变压器的变电所,当设在耐火等级为二级的建筑中,建筑物应采取全面防火措施。()
根据证券法律制度的规定,下列关于上市公司收购人义务的表述中,不正确的是()。
小王步行的速度比跑步慢50%,跑步的速度比骑车慢50%。如果他骑车从A城去B城,再步行返回A城共需要2小时。小王跑步从A城到B城需要()分钟。
ThemajorproblemwithE-mailisthatitis(1)easytousethatpeoplecanbecome(2)withmessages.(3)theycanpossiblyansw
在下面的VisualFoxPro表达式中,运算结果不为逻辑真的是()。
打开http://localhost/web/intro.htm页面,浏览对各个汽车品牌的介绍,找到查看更多汽车品牌介绍的链接,在考生文件夹下新建文本文件searchadress.txt,复制链接地址到searchadress.txt中,并保存。
最新回复
(
0
)