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【单选题】
According to the passage, the island got its first soil from ______.A.
sea waves
B.
its own rock
C.
the sand brought by the wind
D.
cool rains
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【单选题】____birds use their feathers for flight, some of their feathers are for others purposes.
A.
Once
B.
If
C.
Although
D.
baecause
【单选题】During daylight hours, birds ______.
A.
fly aimlessly
B.
rely on landmarks
C.
use sun for guidance
D.
are more likely to get lost
【单选题】Most birds find it safe to sleep in the trees, but they have eggs or young chicks, they don't use a nest. [ ]
A.
why
B.
how
C.
unless
D.
where
【单选题】According to the author, which is the most feasible way to protect birds?
A.
Use fences to protect all the parks in the world.
B.
Try to protect wild space and nature.
C.
Abandon the economic values that birds can bring.
D.
Rely less on agriculture and return farmlands to forests.
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