在生物群落的地带性分布中，起支配作用的是（ ）

【名词&注释】

胰岛素(insulin)、十二指肠(duodenum)、生物群落(biocoenosis)、消化腺(digestive gland)、经纬度(latitude and longitude)、地带性分布(zonal distribution)

[单选题]在生物群落的地带性分布^{(zonal distribution)}中，起支配作用的是（ ）

A. 生物的种类
B. 气候条件
C. 经纬度^{(latitude and longitude)}的递变
D. 地球自转

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学习资料：

[单选题]What is the implication of the words on the bus wall?

A. All small acts will add up to kindness.
B. It's a small act to help a person in need.
C. Everyone can play his own part to make things better.
D. You should be kind to your neighbors and they will treat you the same way.

[单选题]The passage mainly tells us that______.

A. money is the most important thing
B. there is something more important than money
C. we should look into their eyes while talking to people
D. the more money you have, the less happy you would be

[单选题]对胰的描述，下列选项错误的是 （ ）

A. 是人体内大消化腺之一
B. 可分为头、体、尾三部
C. 可分泌胰液及胰岛素
D. 胰头被十二指肠所环抱
E. 胰液及胰岛素经胰管排入十二指肠降部

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