D.Animals’ social skill is no use at all.
()8.Plants’ kin selection is to ________.
A.grow well
B.compete with other kinds of plants
C.strengthen the relationship among siblings
D.find which one is the best
()9.From the passage,we learn that ________.
A.sea rocket is a South American species
B.sea rocket grows aggressively alongside unrelated neighbors
C.sea rocket grows aggressively alongside its siblings
D.sea rocket is a kind of bush without flowers
()10.How can the plants communicate with each other according to experts’ suppose?
A.Plants communicate by using tiny chemical signatures specific to each plant’s family.
B.Plants communicate with each other through their roots.
C.Plants communicate with each other by their leaves.
D.Plants communicate with each other with their flowers.
(一)
本文是科普说明文。科学家经过研究发现:和动物一样,植物也有亲属选择的习性,同时排挤其他种类植物。同时介绍了同系植物之间不竞争的原因、作用以及交流方式。
6.A 主旨大意题。全文说明研究发现:植物也可以辨别亲属,和亲属交流共生而和其他植物生长在一起时则疯狂排挤竞争。
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