如图，AB是⊙O的直径，∠AOC＝110°，则∠D=(     )

   Today we 1 only three lessons in the morning. The first lesson is math. It 2 at eight o’clock and finishes at 3 to nine. It is in Room 101. But I don’t like math. Then the second lesson is my favorite 4 —music. It starts at nine o'clock. The 5 lesson in the morning is PE. It starts at ten 6 ten and finishes at five to eleven. We have our lunch at eleven thirty 7 the second floor of dining hall. We have two lessons 8 lunch. Art starts at two and at three o'clock we have a 9 lesson. We can learn a lot of knowledge about China. At about four in the afternoon 10 is over.

下图表示当有神经冲动传到神经末梢时,神经递质从突触小泡内释放并作用于突触后膜的机制,下列叙述错误的是（   ）