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 are rare species. B、They protect the environment. C、They pollinate crops and wild plants. D、They protect crops and wild p
A、They are rare species. B、They protect the environment. C、They pollinate crops and wild plants. D、They protect crops and wild p
admin
2017-01-20
84
问题
A new study says a widely-used insecticide is damaging wild bee populations.(1)Wild bees are important, because they pollinate(授粉)crops and wild plants. Environmentalists in the United States and Europe say this insecticide is causing a drop in the number of bees.
These insecticides are among the most commonly-used worldwide. Farmers often use seeds treated with the insecticides. The chemicals target insects that eat crops, and they do not spread beyond the field. But they do get into pollen(花粉)and nectar(花蜜), which is where the bees come into contact with them. Researchers studied bees in fields. They say there were about half as many wild bees per square meter in treated fields as in untreated ones. Using the chemicals too much may be hurting bees.(2)They suggest that the chemicals should be used more sensibly, or, in other words, only when necessary.
Questions 1 and 2 are based on the news report you have just heard.
1. Why are wild bees important?
2. What is researchers’ suggestion on using chemicals?
选项
A、They are rare species.
B、They protect the environment.
C、They pollinate crops and wild plants.
D、They protect crops and wild plants.
答案
C
解析
转载请注明原文地址:https://kaotiyun.com/show/nhi7777K
0
大学英语四级
相关试题推荐
Improvinghearing,especiallyinaloudenvironment,isjustlikeanyotherskill—ittakespractice.Thedin(喧闹声)ofaloudr
HowtoBeMorePersuasiveA)Somepeoplehaveit,butmanymoredonot.Theyaretheluckyfewwhopossessthenaturalabilityto
TheSeriousRisksofRushingNewTeacherEvaluationSystemsA)Oneoftheprimarypolicyreformsnowbeingemployedinstatesand
HowtoUseTechnologytoMakeYouSmarterA)Canacalculatormakeyousmarter?TheQAMA(developedbyIlanSamson,an"inventor-i
Globalwarmingmayornotbethegreatenvironmentalcrisisofthe21stcentury,but—regardlessofweatheritisorisn’t—wewo
Globalwarmingmayornotbethegreatenvironmentalcrisisofthe21stcentury,but—regardlessofweatheritisorisn’t—wewo
FixingAmericanSchools:CharterVocationalHighSchoolA)PubliceducationinAmericaisamess.Toooften,parentsareabsento
Peopleintheirsixtiesshouldgotouniversitytoretrainbecausetheywillbeexpectedtoworkforlongerbeforeretirement,t
Fromaveryearlyage,somechildrenexhibitbetterself-controlthanothers.Now,anewstudyhas【B1】______howlowself-contro
A、Moreparkingplacesaredeserted.B、Moreroadsaredamagedbycars.C、Therearemorecaraccidents.D、Therearemoretrafficj
随机试题
呕吐伴眩晕、眼球震颤可见于
自发性气胸常继发于
鉴别再障与急性白血病最主要的检查是
男,25岁。右手腕部被机器绞伤,皮肤脱套,异常活动,创口流血。正确的处理方法是
某律师在担任甲企业法律顾问过程中,了解到甲企业急需向乙企业购买一批原料,否则将因停产造成重大损失,便将此事告之在乙企业工作的好友丁某。丁某知此情况后,即提高该批原料价格,使甲企业为购置该批原料多付出10万元。事后,丁某以其他名义送给该律师5000元。依照《
以下关于工程项目人力资源管理人员获取的表述正确的是()。
施工单位采购的某类钢材分多批次进场时,为了保证在抽样检测中样品分布均匀、更具代表性,最合适的随机抽样方法是()
中国汽车行业协会公布的2009年4月份中国汽车销售数据显示,在其他国家汽车销售量进一步疲软的情况下,国内乘用车销售量却持续上升,当月销量已达83.1万辆,比3月份增长7.59%,同比增长37.37%。乘用车细分为基本型乘用车(轿车)、多功能车(
中央银行针对某些特殊的经济领域或特殊用途的信贷而采用的信用调节工具被称为选择性货币政策工具,如()就是选择性货币政策工具。
A、 B、 C、 C本句是询问休假时打算去哪儿的Where疑问句。
最新回复
(
0
)