首页
登录
职称英语
Growing grapes in greenhouses containing air enriched with carbon dioxide in
Growing grapes in greenhouses containing air enriched with carbon dioxide in
游客
2025-02-19
18
管理
问题
Growing grapes in greenhouses containing air enriched with carbon dioxide increases crop yields, an effect that is enhanced when the growing temperature is also raised several degrees. Although enclosed cultivation is impractical in vineyards, increases in yields from grape cultivation in the open air can be expected because emissions from the burning of fossil fuels will almost certainly lead to an increase in the carbon dioxide content of atmospheric air over the next century.
Which of the following, if true, most weakens the argument?
选项
A、When grapes are grown in greenhouses, it is relatively easy to control the grape pests that thrive in air enriched with carbon dioxide.
B、Recent improvements in pest control have increased grape yields in many vineyards.
C、Increasing carbon dioxide levels in greenhouses has not been shown to improve the quality of grapes grown in greenhouses.
D、Increasing carbon dioxide levels in greenhouses increases the sweetness of raisins made from grapes grown in the greenhouses.
E、As the carbon dioxide level in the open air increases, temperatures at the Earth’s surface will also increase.
答案
A
解析
二氧化碳上升时,在露天环境下控制害虫不容易→产量下降。削弱了结论,故A正确。B项加强了结论,故不选。C项文章讨论的是产量,和品质无关,故不选。D项错误原因同选项C。E项温度和二氧化碳都上升,根据文章可知这会导致葡萄产量上升。加强了结论,故不选。
转载请注明原文地址:https://tihaiku.com/zcyy/3963833.html
相关试题推荐
Inanexperiment,agroupofpregnantmicewereeachgivenfoodcontainingm
Growinggrapesingreenhousescontainingairenrichedwithcarbondioxidein
Increasingthepriceofpetrolisthebestwaytosolvegrowingtrafficand
Thegraphbelowshowsaveragecarbondioxide(CO2)emissionsperpersonintheU
Whichpollutantiscurrentlythesubjectofurgentresearch?A、nitrogendioxideB
随机试题
Whatisnumberoftheman’sID?[originaltext]W:Goodafternoon,sir.Istherea
ConcertInformationPlace:【5】______AuditoriumTicketprice:【6】_
Whattimewilltheflightleave?[br][originaltext]M:NowMissCox,canwejus
[originaltext]W:BeingHispanic,whatadvantagesanddisadvantageshaveyoufac
Forthispart,youareallowed30minutestowriteashortessayentitledHo
[originaltext]Welcometothemuseum.Beforewegoinside,I’dliketoremindyo
火灾发展阶段一般包括()。A.火灾发生 B.火灾发生初期 C.火灾发
细胞衰老和凋亡对维持个体的正常生长发育及生命活动具有重要意义。下列叙述错误的是(
甲公司从事建材生产作业,其在外地设有一分公司乙,并且已取得营业执照;2019年8
男性,3岁。自生后6个月开始出现口唇、指(趾)甲床青紫,并有杵状指。胸部X线检查
最新回复
(
0
)