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
2024-01-31
15
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/3410576.html
相关试题推荐
[originaltext]M:Ifwedecidedtotaketheapartment,howsooncouldwemovein
[originaltext]M:Ifwedecidedtotaketheapartment,howsooncouldwemovein
[originaltext]M:Ifwedecidedtotaketheapartment,howsooncouldwemovein
[originaltext]M:Ifwedecidedtotaketheapartment,howsooncouldwemovein
[originaltext]M:Ifwedecidedtotaketheapartment,howsooncouldwemovein
[originaltext]M:YoucanteachJiminamorepleasantway.You’llspoilhisapp
[originaltext]M:YoucanteachJiminamorepleasantway.You’llspoilhisapp
[originaltext]M:YoucanteachJiminamorepleasantway.You’llspoilhisapp
[originaltext]W:Simon,couldyoureturnthetoolsIlentyouforbuildingthe
[originaltext]W:Simon,couldyoureturnthetoolsIlentyouforbuildingthe
随机试题
DothefollowingstatementsagreewiththeinformationgiveninReadingpassage
A.2x-y+2=0 B.2x+y+1=0 C.2x+y-3=0 D.2x
计算单位体积与毛体积密度相同,但计算质量以表干质量为准时,称表干毛体积密度,即通
我国实施“三步走”发展战略的主要特点是( ) A.既有雄心壮志,又坚持实事求
人在每一瞬间,将心理活动选择了某些对象而忽略了另一些对象。这一特点指的是注意的(
关于胃排空的叙述,下列哪项是错误的? A.食物进入胃内5min即有食糜排入十二
通常在一门课程或教学活动结束后进行,是对一个完整的教学过程进行测定的评价是___
使用HAMA时需要评定员的数量是()个。(2008-05)A:1B:2C:3
对于某类商品房,甲既有需要也有支付能力,乙有需要但无支付能力,丙有支付能力但不需
物业建设单位制定临时管理规约的时间是在()。A:物业销售之前 B:物业竣工之前
最新回复
(
0
)