首页
登录
职称英语
[originaltext] A new study says a widely-used insecticide is damaging wild b
[originaltext] A new study says a widely-used insecticide is damaging wild b
游客
2024-02-02
23
管理
问题
A new study says a widely-used insecticide is damaging wild bee populations.(3)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.(4)They suggest that the chemicals should be used more sensibly, or. in other words, only when necessary.
3. Why are wild bees important?
4. What do researchers suggest when using chemicals?
选项
A、Chemicals should be used as many as possible.
B、Chemicals should be used only if necessary.
C、Chemicals should be used as few as possible.
D、Chemicals should be used once a month.
答案
B
解析
转载请注明原文地址:https://tihaiku.com/zcyy/3415721.html
相关试题推荐
[originaltext]M:Didyoureallygiveawayallyourfurniturewhenyoumovedint
[originaltext]M:Didyoureallygiveawayallyourfurniturewhenyoumovedint
[originaltext]M:Didyoureallygiveawayallyourfurniturewhenyoumovedint
[originaltext]M:Didyoureallygiveawayallyourfurniturewhenyoumovedint
[originaltext]M:IjustreceivedanE-mailfromoneofmyformerclassmates.I
[originaltext]M:IjustreceivedanE-mailfromoneofmyformerclassmates.I
[originaltext]M:IjustreceivedanE-mailfromoneofmyformerclassmates.I
[originaltext]M:IjustreceivedanE-mailfromoneofmyformerclassmates.I
[originaltext]CountyfairsareatraditioninNewEnglandtowns.Theyoffer
[originaltext]CountyfairsareatraditioninNewEnglandtowns.Theyoffer
随机试题
AcademicTitlesatUSCollegesI.Tenureprofessors-
[originaltext]Ascientificteamisstudyingthethinkingabilityofeleven-
Therehasbeena______lackofcommunicationbetweentheunionandthemanageme
NegotiatingSkillsCanBeLearned[A]Managersnegotiatecont
A.系统的总阻抗减小,总流量增加 B.各用户的流量按同一比例减小 C.各用户
A.中火 B.文火 C.武火 D.先文火后武火 E.先武火后文火煅法通常
工资指导线有三条线,分别是()A:基数线 B:上线 C:基准线 D:下线
短期RSI长期RSI,属于多头市场;反之,属于空头市场。()
任何理财咨询专业服务的必然条件是()。A.深入了解客户 B.理财师的专业
银行承兑汇票的承兑银行,应当按照票面金额向出票人收取()的手续费。A:千分之一
最新回复
(
0
)