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、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
【B1】[br]【B10】A、glancesB、touchesC、talksD、sightsA本段讨论的是眼睛的微妙的动作。由上文noticewh
______,Icouldhavetriedharder—butIstilldon’tthinkallthiscriticismi
What’sthemainpointofthispassage?[br]Throughsocialnetworking,youcan_
A.具有计数功能 B.保持原有状态 C.置“0” D.置“1”
根据输出对输入的依赖关系设计测试用例的黑盒测试方法是()A.等价类划分法 B
根据相关法律、法规,下列应计入事故间接经济损失的是()。A.火灾爆炸中毁损的财
下列除哪项外,其他均是妊娠心脏病的中医病机A、阴阳两虚 B、气滞痰阻 C、气
人类个体的成长环境就是人类的社会环境。
为判断固定资产的总体合理性,审计人员通常可采用的分析程序有:A、分析本期与以前各
转氨酶的辅酶是() A.泛酸 B.生物素 C.四氢叶酸 D.磷酸吡哆醛
最新回复
(
0
)