图中所示物体的长度为________cm。_爱下问搜题

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问题实验题

图中所示物体的长度为________cm。

答案

2.24

图中的物体，左端对准3cm，右端对准约5.25cm，5.25-3=2.25．

刻度尺分度值是1mm，以cm为单位，应该小数点后有两位．

故答案为：2.24cm．

补全对话，情景问答

阅读对话，根据上下文的内容，选择合适的句子，将字母编号填在横线上。

A. Can I go with you?              B. Where is it?
C. When shall we meet?            D. Shall we meet at 5:00?
E. How can we get to the library?   F. Is there a library near here?
G. What are you going to do this afternoon?

Amy: Hello, Tom 1                       ?
Tom: I am going to read books in the library.
Amy: 2                     ?
Tom: Yes, there is a library near our school.
Amy: 3                     ?
Tom: It's on the left of the Zhongshan Park.
Amy: That's great! I like reading, too. 4                     ?
Tom: Sure, if you like. It's not far. Let's go together.
Amy: Good! 5                     ?
Tom: Let's meet at 5:00 after class.
Amy: OK. See you then.

填空题案例分析题

如图为某种反射弧示意图，A、B、C、D为神经纤维上的实验位点，C为突触间隙。结合下述实验回答问题：

在正常情况下，我们认为神经冲动在一个完整反射弧中的传递是单向的，决定这一传递特点的主要原因是（）。