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【单选题】

果皮坚硬,内含一粒种子,成熟时果皮与种皮分离,如板栗、榛子等为()

A.
角果
B.
荚果
C.
坚果
D.
核果
E.
蒴果
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题目标签:坚硬榛子板栗
参考答案:
参考解析:
.
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【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】人体中最坚硬的钙化组织是()

A.
牙釉质
B.
牙本质
C.
牙骨质
D.
蛋白质
E.
以上都不是

【单选题】骨组织坚硬的原因是:

A.
骨细胞不断分泌骨质
B.
胶原纤维粗大且平行排列
C.
骨组织含大量的骨盐
D.
骨组织呈板层状

【单选题】我国著名的京东板栗产于(),可食也可制馅。

A.
山东省泰安
B.
辽宁省丹东
C.
河南省确山县
D.
北京西部燕山山区

【单选题】板栗的果实生于壳斗内,其壳斗的特点是()

A.
小苞片呈分枝刺
B.
苞片鳞形
C.
苞片线形
D.
苞片钻形