题目内容

突触中含有神经递质的结构是

A. 突触前成分中的突触小泡
B. 突触后成分
C. 线粒体
D. 微管

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对轴突的描述哪项是错误的

A. 每个神经元只一个
B. 表面光滑、分支少
C. 含嗜染质-尼氏体
D. 含神经原纤维
E. 将冲动传离胞体

A driver’s licence issued in one state is recognized by all the other states in the US.

A. 对
B. 错

The average speed limit in the US is 60 mph (97 km/h) or higher.

A. 对
B. 错

In the US, a driver cannot overtake other vehicles unless in a legal passing zone.

A. 对
B. 错

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