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
27
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
(29)______[br](32)______A、worseB、harderC、betterC根据上下语境,在放松的环境中,可以沟通过地更好,应为b
【教学过程】 (一)开始部分 1.课堂常规:体委整队,报告人数,师生问好,教师简要介绍教学内容,检查服装,安排见习生。 导入:同学们,今天在上课之前,老师
治疗无排卵性功血,以下说法不正确的是A.雌、孕激素序贯法适用于青春期功血 B.
据对全国规模以上文化及相关产业5.9万家企业调查,2020年上半年,上述企业实现
托架的规格为300mm×70mm×4.5mm,用于与Ф114mm钢管立柱配套使用
继发性闭经,溢乳,以下常见的原因中错误的是A.泌乳素瘤 B.口服避孕药 C.
与消化性溃疡关系最密切的是A.心、脾、胃 B.肝、胆、胃 C.肝、脾、胃
A.生半夏B.苦杏仁C.满山红D.桔梗皂苷E.前胡对妊娠大鼠母体及胚胎均有明显毒
某少儿出生于低氟地区,为其补充氟化物的最佳时间是出生后A.1个月 B.3个月
患者,男,62岁,自5m高坠落半小时,自述口渴。查体:P98次/分,R35次/分
最新回复
(
0
)