题目内容

视杆细胞的特点是

A. 愈近视网膜边缘分布的缅胞数目愈多
B. 形成的信息传导通路中普遍存在会聚现象
C. 细胞只含有一种视紫红质色素
D. 细胞组成晚光觉系统

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更多问题

We often feel ____ when our efforts do not achieve what we hoped they would.

A. cut off
B. let down
C. put away
D. set up

—Your new cell phone looks so handsome. May I have a look — ____. You will like it.

A. Sure, go ahead
B. Not at all
C. It doesn’t matter
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I enjoyed reading the story by Sarah Peterson. It was rather sad, ____.

A. though
B. instead
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A. reply
B. explain
C. declare
D. suggest