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
37
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
Wecanengageourselveswithmusicasacomposer,performer,orlistener.As
Withmorecollegegraduatesbecomingentrepreneurs,manycollegestudentsare
IthappenedthatIwentoutthatday.Theitalicizedpartis______.A、theobject
Manyparentsmaythinkthateachnewsibling(兄弟姐妹)offerstheirchildrenthe
下列不属于利率期权合约基础资产的是()。A.政府债券 B.股票指数 C.欧
以下有关酶偶联法测定酶活性浓度的描述,错误的是A:往往利用一个以上的工具酶B:
一块屋场,几条板凳,没有主席台,不用音响话筒,无需讲话稿,聊的是田头村事,谈的是
按照邓小平同志的“两个大局”思想,面向新世纪、新形势、新任务明确提出了实施西部大
下列关于投资性房地产后续计量的表述中,错误的是()。A.投资性房地产采用公允
按照杜能理论的假设,()之和等于一个常数。A、成本、运费 B、利润、成本 C
最新回复
(
0
)