may
affect
human
health
before
approving compounds.
Bees also provide some clues to how we may build a more collaborative relationship with the services that ecosystems can provide.Bees could offer some of the pollination services needed for agriculture.People discover that crop harvests,and thus
profits,are
maximized
if some
croplands
are
left uncultivated for bees.Meanwhile a variety of wild plants means a healthier,more diverse bee population,which will then move to the planted fields next door in larger and more active numbers.
1.Which of the following is NOT the cause that leads to bees’
death?
A.Lack of nutrition from enough diverse flowering plants.
B.The pests and diseases of the bees.
C.The beekeepers’ destroying without intention.
D.The pesticides applied to crops.
2.By saying “one plus one equals three,or four,or more” in
Paragraph 3,the author means that ________.A.united bees mean they are much more powerful
B.united bees mean they are much more poisonous
C.mixed pesticides mean they are much more poisonous
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