动物体的形态结构总是与其功能相适应的。请根据这一生物学的基本观点,回答下列问题:

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问题:

动物体的形态结构总是与其功能相适应的。请根据这一生物学的基本观点,回答下列问题:

⑴陆生动物一般都有防止水分散失的结构,如昆虫具有        

⑵老虎是肉食性动物,其牙齿分化与家兔不同,有锋利的     ,用于撕裂食物。

⑶鸟的长骨中空,胸骨突出呈龙骨突,适于     生活。

⑷蚯蚓的体壁密布毛细血管,始终保持湿润,可以进行________。

考点:观察实验:饲养和观察蚯蚓动物的生活环境和生活习性动物的形态结构和功能
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Once there was a little boy. He got angry easily. His father gave him some nails (钉子)and told him: “When you get angry, put a nail into the wall.”

On the first day, the boy put 37 nails into the wall. The next day, he put in fewer nails. A few days later, he found it much easier not to get angry.

After a while, the boy was happy every day.

Then, his father asked him to take out a nail each day if he didn’t get angry. After some time, all the nails were gone.

Then the father took the boy to the wall and said: “Well done, son. But, look, the wall is full of holes. It will never be the same. When you say things in anger, they leave a scar(伤疤) in people’s hearts(心). No matter how many times you say sorry, the scars will always be there.”

It’s not nice to leave scars in people’s hearts. So please hold back your anger. Think before you say angry things to friends and family.

小题1:The little boy_______________.

A. liked nails     B.got angry easily      C. had scars

小题2:When the boy got angry, his father asked him to ____.

A. take a vacation

B. take walks

C. put a nail into the wall

小题3:The father wanted his son __________.

A. to be kind and polite

B. to be angry

C. to be strong

小题4:The words “hold back”probably means____ in Chinese.

A. 抱住       B. 爆发     C. 控制

小题5:From the passage, we know____.

A. It is good to get angry easily.

B. Nobody liked the boy

C. The father had a good way to teach his son.

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关于流线的特征的描述,错误的是( )。

A.( 一般情况下流线不能相交

B.( 恒定流中,流线的形状与位置不随时间发生变化

C.( 流线充满整个流体运动的空间

D.( 流线就是流体质点运动的轨迹线

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证据规则有哪些功能?

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C、N、S的氧化物中许多是工业上重要的化工原料,但是当它们分散到空气中时,会带来很多环境问题.下列有关这些元素的氧化物说法错误的是(  )

A.开发太阳能、水能、风能、氢能等新能源将有利于减少这些元素的氧化物的产生

B.N与S的某些氧化物能直接危害人的身体健康,引发呼吸道疾病

C.“温室效应”与二氧化碳的排放有着直接的关系

D.这些氧化物使雨水的pH<7,我们把pH<7的雨水称之为酸雨

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医务人员医德考评应当认定为较差的情形是()

A.在医疗服务活动中接受患者或家属的口头感谢

B.复印医学文书及有关资料的

C.出具医学证明文件供他人使用的

D.医疗服务态度较差,但未造成恶劣影响或者严重后果的

E.违反医疗服务和药品价格政策,多计费、多收费或者私自收取费用,情节严重的

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