单项选择题

Western Nebraska generally receives less snow than ______ Eastern Nebraska．
A、in
B、it receives in
C、does
D、it does in

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单项选择题

Which of the following provinces is NOT in East China?( )
A、Jiangsu
B、Zhejiang
C、Anhui
D、Shanxi

神经末梢释放神经递质的过程是（）。

答案： A.单纯扩散
B.易化扩散
C.主动转运
D.入胞作用
E.出胞作用
正确答案：...