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
A、They were evident in the decreased world temperature. B、They were of several days’ duration worldwide. C、They were felt mainly
A、They were evident in the decreased world temperature. B、They were of several days’ duration worldwide. C、They were felt mainly
admin
2009-04-23
115
问题
Scientists claim that air pollution causes a decline in the world’s average air temperature. In order to prove that theory, ecologists have turned to historical data in relation to especially huge volcanic eruptions. They suspect that volcanoes effect weather changes that are similar to air pollution.
One source of information is the effect of the eruption of Tambora, a volcano in Sumbawa, the Dutch East Indies— the former name of the Republic of Indonesia—in April 1815. The largest recorded volcanic eruption, Tombora threw 150 million tons of fine ash into the sky. The ash from a volcano spreads worldwide in a few days and remains in the air for years. Its effect is to turn incoming solar radiation into space and thus cool the earth. For example, records of weather in England show that between April and November 1815, the average temperature had fallen 4.5F. During the next twenty-four months, England suffered one of the coldest periods of its history. Farmers’ records from April 1815 to December 1818 indicate frost throughout the spring and summer and sharp decreases in crop and livestock markets. Since there was a time lag of several years between cause and effect, by the time the world agricultural commodity community had deteriorated, no one realized the cause.
Ecologists today warn that we face a twofold menace. The ever-present possibility of volcanic eruption, such as that of Mt. St. Helen s in Washington, added to man’s pollution of the atmosphere with oil, gas, coal, and other polluting substances, may bring us increasingly colder weather.
选项
A、They were evident in the decreased world temperature.
B、They were of several days’ duration worldwide.
C、They were felt mainly in the Dutch East Indies.
D、They were immediately evident to the world’s scientists.
答案
A
解析
What’s true about the effects of Tambora’s eruption according to the passage?
转载请注明原文地址:https://kaotiyun.com/show/MUpK777K
0
大学英语六级
相关试题推荐
Todayworkingforanestablishedcompanyisnolongeraguaranteeoflifetime(employ)______.
You’dthinkPaulineHordwouldhaveservedhertimebynow.Afterall,sherecentlycelebratedher90thbirthday,andbythetim
Onweekendstherearealotofchildrenplayinginthepark,______parentsseatedtogetherjoking.
A、ShecancheckMr.Smith’stimetableherself.B、She’llchecksomethingfortheman.C、Shehasputupasignonthedoor.D、She
A—WaitingandBoardingJ—CustomsDeclarationFormB—LuggageDeliveryK—QuantityAllowedtoTakeC—InspectionandQuarantineL—Re
AbouthowmanyadultAmericanshavethe"weightproblem"?______percent.
A—multimediamessageserviceJ—fixeddialB—subscriberidentitymoduleK—automaticredialC—voicepromptL—two-waychargin
A、Themanlikestheclassicalartinahigherdegree.B、Themanlikesthemodernartbetter.C、Themanlikesneithermodernnor
A、Workoutaplantotightenhisbudget.B、Findouttheopeninghoursofthecafeteria.C、Applyforaseniorpositionintheres
随机试题
关于片剂包衣的目的,下列叙述正确的是
患者,男,56岁。多饮、多尿6个月,查体除消瘦外未见其他阳性。血糖15.8mmol/L,尿糖(++++),酮体(±),胰岛素释放试验呈低平曲线,GADAb14.8(正常<1.0),HbAlc10.2%(正常4%~6%)。确定最有意义的糖尿病分型指标是
患者男,78岁。患慢性阻塞性肺疾病30余年,现处于疾病稳定期。在为其制定肺功能康复计划时,应是
各类建筑±0.00以上墙体禁止使用粘土实心砖作为砌体。()
某学校准备组织290名学生进行野外考察活动,行李共有100件,学校计划租用甲和乙两种型号的汽车共8辆,经了解,甲种汽车每辆最多能载40人和10件行李,乙种汽车每辆最多能载30人和20件行李.设租用甲种汽车z辆,请你帮助学校设计所有可能的租车方案.
读取二进制文件的函数调用形式为:fread(buffer,size,count,fp);,其中buffer代表的是()。
NoEnglishmanbelievesinworkingfrombooklearning.Hesuspectseverythingnew,anddislikesit,unlesshecanbecompelledby
Cheatingisnothingnew.Buttoday,educatorsandadministratorsarefindingthatinstancesofacademic【C1】______onthepartof
Howeveryouviewcreditcards,it’shardtoliveinthemodernworldwithoutone.Andifyouhaveone,youoweittoyourselfto
A、Classmates.B、Colleagues.C、Bossandsecretary.D、PRrepresentativeandclient.B录音提到,Jokn和Sue加入了一家成功的publicrelation公司。由此可知他们
最新回复
(
0
)