下图是张扬同学利用两片长方形木板、两条松紧带和一颗螺丝钉制作的肌肉牵拉骨运动的模

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问题:

下图是张扬同学利用两片长方形木板、两条松紧带和一颗螺丝钉制作的肌肉牵拉骨运动的模型,请据图回答下列问题: 

(1)图中①、②相当于荫块_______,③、④相当于________。

(2)根据图中虚线箭头判断,此时④应处于________状态,③应处于________ 状态。如果⑤表示肘关节,则此过程表示________动作。

(3)从这个模型可以看出,人在运动时要靠________牵拉_______,绕⑤转动而完成动作。

考点:人体运动的产生人体的运动系统
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公安工作在战略战役部署与实施上,在法制与政策的结合上,在多部门横向协同上,要高度统一,又要注意适当分散。 ( )

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单词拼写

小题1:You have done so much work. You are b________ to pass the exam.

小题2:Some people would rather die with d_________ than give in to cruel enemies.

小题3:Then a law was passed, a_________ slavery. Slaves were free at last.

小题4:A________ of murder by the police, Tom was sentenced to prison for life.

小题5:It was greatly to his c________ that Arthur gave back the money he found on the street.

小题6:E_______ yourself to the sun for too long does harm to your skin.

小题7:It’s of v________ importance for students to master a foreign language.

小题8:A growing number of students rent a house near the school just for c_________.

题型:读图填空题

“立方烷”是一种新合成的烃,其分子为正方体结构,其碳架结构如图所示:

(1)“立方烷”的分子式是______;“立方烷”有多种同分异构体,其中一种属于芳香烃的同分异构体的结构简式是______.

(2)该立方烷的二氯代物具有同分异构体的数目是______.

题型:读图填空题

香港人多地少,可供城市发展的土地有限,解决香港土地不足的办法是[ ]

A.建设城市绿地        

B.建设高层建筑

C.工业转移到祖国大陆  

D.减少城市绿化用地

题型:读图填空题

性味甘温,能够补肝肾,强筋骨,安胎的药物是( )

A.狗脊

B.五加皮

C.菟丝子

D.续断

E.杜仲

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