______apparently rigid, bones exhibit a degree of elasticity that enables the skeleton to withstand considerable impact.
A. In spite of
B. As
C. Although
Despite
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_______native to Europe, the daisy(雏菊)has now spread throughout most of North America.
Although
B. In spite of
C. If it were
D. That it is
Dew is formed_____ the grass is thick.
A. while
B. where
C. when
D. until
You can find him_____he works.
A. when
B. where
C. which
D. as
_____some flowers contain more nectar than others, how does a honeybee worker,faced with a patch of flowers containing variable amounts of nectar, decide when to stop collecting.
A. Given that
B. Giving that
C. To give
D. Being given