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
31
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
Readthefollowingpassageandfillintheblankswithitscontents.As
I’m_____aboutthefootballteam’schancesofwinning,butheabsolutelydisagree
What’sthefurthestyouhaveevercycled?Perhapsyoucycletoschoolorto
What’syourearliestchildhoodmemory?Canyourememberlearningtowalk?Or
校样与原稿的差异,通常是在( )过程中发生差错而造成的。A.原稿撰写 B.原
输卵管妊娠和阑尾炎的主要鉴别要点是:()A.停经 B.右下腹痛
(2018年真题)以下估值方法中,估值结果与未来价值通常无必然联系的是()
患者,男性,50岁。患1型糖尿病30年,因感冒、体温39℃、食欲减退、恶心呕吐及
2017年3月2日,甲有限公司因资不抵债进人破产重整程序。乙公司因向甲公司提供商
资源税纳税人开采应税产品自用于连续生产应税产品的,于移送时缴纳资源税。()
最新回复
(
0
)