问题
选择题
缩手反射的反射弧中[ ]
A．包含二个神经元
B．效应器是上肢的肌肉细胞
C．神经中枢位于脊髓与大脑皮层
D．传出神经末梢释放的递质能使肌肉收缩
答案
答案：D
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缩手反射的反射弧中[ ]
A．包含二个神经元
B．效应器是上肢的肌肉细胞
C．神经中枢位于脊髓与大脑皮层
D．传出神经末梢释放的递质能使肌肉收缩
答案：D
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| When I was a little girl, every Sunday my family of six would put on our best clothes and go to Sunday School and then church. The 1 in elementary school would all meet together to sing songs, and then later divide into groups based 2 their ages. One Easter Sunday, all the kids 3 with big 4 about what the Easter Bunny (复活节兔子) had brought. 5 all of the kids shared their stories with 6 , one young boy, whom I should call Bobby, sat 7 . One of the teachers, noticing this, said to him, "And what did the Easter Bunny 8 you?" He replied, "My mum 9 the door by accident so the Easter Bunny couldn't get 10 because he hadn't got a key." This sounded like a 11 idea to all of us kids, so we kept on going with the stories. My mom knew the true story, 12 . Bobby's mom was a single parent, and she suspected (怀疑) that they just couldn't 13 the Easter Bunny. After Sunday School was over, everyone went off to 14 . But my mom announced that we were going home 15 . At home, she explained that to make Bobby feel 16 , we were going to pretend to be the Easter Bunny, make a basket of our candies for him and 17 it at church. We all donated some to the basket, and 18 back to church. There, mom hung the basket over the hanger (挂钩) and attached a(n) 19 : Dear Bobby, I'm sorry I 20 your house last night. Happy Easter! Love, The Easter Bunny | ||||
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