下图是反射弧和脊髓结构图。回答下列问题: (1)图中神经冲动在完整反射弧中的传

题型:读图填空题

问题:

下图是反射弧和脊髓结构图。回答下列问题:

(1)图中神经冲动在完整反射弧中的传递顺序为_______(用图中数字和箭头表示)。脊髓灰质炎患者会出现下肢肌肉萎缩的症状,是因为脊髓灰质炎病毒破坏了图中编号为________的部分。

(2)图中神经信号在⑥处和③处的传导(传递)有什么不同?__________________。

考点:反射神经冲动的产生和传导
题型:读图填空题

周末小刚帮妈妈从超市买回一桶食用油,油和桶总质量为4.5kg,他提着油桶走回家.从一楼匀速走到三楼,若每层楼高3m,他的体重为500N,每只脚与地面的接触面积约为200cm2,上楼所用的时间为10s.(g=10N/kg)

求:(1)小刚上楼的速度.

(2)小刚走路过程中对地面的压强.

(3)小刚上楼的总功率.

题型:读图填空题

Once a man and his wife worked for an old man. There was a big box in the old man’s living room. The old man pointed to the box and said, "There’s only one thing you (1) do. Don’t open the box. " (2) saying this, he left his home.The woman said to her husband," There must be (3) expensive in the box. Let’s open it, shall we" Her husband said (4) to her. But the woman didn’t give up her (5) . One day, she decided to find out (6) was in it. Her husband didn’t stop her. She opened the box and looked inside. To her surprise, she found nothing in the box. She tried hard to close it, but she (7) That evening the old man came home and found the box was (8) . He was very (9) and asked the woman and her husband to leave his home."But there was nothing in the box," the woman said. "We haven’t taken anything at all. "The old man (10) them, "The box is not important, but I cannot believe you. That’s important!

 

第(9)空应选择()

A.honest

B.happy

C.careful

D.angry

题型:读图填空题

交换机2MB数字中继中断,电话不通,应如何进行处理?简述处理步骤。

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下列不属于基础教育课程改革目标内容的一项是()。

A.改变课程结构过于强调学科本位、门类过多和缺乏整合的现状

B.改变课程实施过于强调接受学习,死记硬背、机械训练的现状

C.改变课程管理过于分散的情况,增强对课程的过程管理

D.改变评价过分强调评价的甄别与选拔的功能

题型:读图填空题

对运动性贫血的运动员如何治疗和合理安排训练?

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