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
18
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、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://tihaiku.com/zcyy/3415720.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]M:IjustreceivedanE-mailfromoneofmyformerclassmates.I
[originaltext]CountyfairsareatraditioninNewEnglandtowns.Theyoffer
随机试题
Onelunchtime,MayWardwasgoingroundthelocalsupermarketinParksideRo
下列函数中,为偶函数的是( )A.y=log2x B.y=x2 C.y=4
一元线性回归模型中,回归估计的标准误差越小,表明投资组合的样本回归线的离差程度(
A.甲状腺B.肾上腺髓质C.肾上腺皮质束状带D.肾上腺皮质网状带E.肾上腺皮质球
调查的结果可以为具体工作提供参考和依据,包括( )。A.整体薪酬水平的调整
资产保管是基金托管业务的重要方面,可能存在着多方面的风险,其中不属于资产保管风险
某商业银行推出“校园贷”业务,旨在向在校大学生提供额度不等的消费贷款。对此,下列
某储户2019年10月10日存入银行活期储蓄存款10000元,同年11月10日该
经彻底的喷射或抛射除锈,钢材表面无可见的油脂或污垢,且氧化皮、铁锈和油漆涂层等
O型血 A.红细胞膜上含A凝集原,血清中含抗A凝集素 B.红细胞膜上含B
最新回复
(
0
)