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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】FruitImagine a world without fruit. We wouldn’t be very healthy. We get a lot of important vitamins from eating fruit.We think of fruit primarily as something to eat._____（26）Fruit is part of a flower...
A.
Dry fruits are thin and hard.
B.
We even make alcohol from fruit.
C.
But fruit has a purpose quite apart from our needs.
D.
So these plants produce fleshy fruits.
E.
Then the seeds grow into new plants.
F.
But the plants grown from these seeds are seedless.
【单选题】【2010河北省卷】27. Sally is very happy. There is a big smile ________ her face.
A.
on
B.
to
C.
in
D.
at
【单选题】【2010河北省卷】31. —Do we have to finish our homework this afternoon?—Yes, you ________.
A.
must
B.
can
C.
may
D.
need
【单选题】【河北省2011】36. You ____eat the soup if you don't like it.
A.
shouldn't
B.
mustn't
C.
needn't
D.
can't