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
21
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
A--OliverTwistB--PrideandPrejudiceC--TessoftheD’urbervilles
A—judicialsystemB—InsuranceLawC—criminalpr
Theautomobile,alongwithahouseandagarden,is【C1】______oftheAmerican
用于检查结构构件混凝土强度的试件,应在混凝土的()随机抽取。A.浇筑地点 B
监理工程师有义务建议建设单位在信息系统安全管理上采取一定的措施和规划。下列建议中
按照《海港工程混凝土结构防腐蚀技术规范》只有()粒化高炉矿渣可以用于高性能
榭是小巧玲珑、开敞精致的建筑物。
下列关于咖啡酸叙述错误的是A.来源于一枝黄花 B.有抗菌作用 C.有抗病毒作
根据以下资料,回答问题。 2008年底,我国网民数从1997年的62万增加
我国《民法通则》规定,民事诉讼的一般诉讼时效力()年。A:1B:2C:3D
最新回复
(
0
)