We were all to hear the news that Tom, the silly boy, has won an award.
A. fluent
B. amazed
C. rude
D. successful
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Tony often with his wife about money.
A. argues
B. interviews
C. embarasses
D. improves
The girl got much from her father when she told him about her pains.
A. detail
B. energy
C. sympathy
D. suggestion
I've learned from my uncle that dogs people by their smell.
A. argue
B. improve
C. recognize
D. expect
关于双极细胞的叙述不正确的是()。
A. 双极细胞分为撤光双极细胞(OFF细胞)和给光双极细胞(ON细胞)
B. 双极细胞的中心感受野与周边感受野的膜电位对光反应相同,即对中心光照能使双极细胞去极化那么对其周边光照也会使双极细胞去极化
C. 双极细胞的中心感受野是一个提供直接光感受器输入的圆形视网膜区域,周边感受野是一个通过水平细胞提供输入的视网膜环形区域
D. OFF细胞谷氨酸门控的阳离子通道通过Na+内流介导经典的去极化兴奋性突触后电位(EPSP)
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