生物体的呼吸作用，就是在________的参与下，分解体内的___________爱下问搜题

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生物体的呼吸作用，就是在________的参与下，分解体内的__________，释放______供生命活动的需要的过程。吸气时，肺泡内氧的浓度比血液里的_________（填“高”或“低”），氧便从肺泡扩散到_________里；因此，血液中的氧气含量增加，从这里可以得出：经过肺泡的过程是_________血变成_________血的过程；而在身体各部分的组织处则刚好相反，血液流经身体的各组织时，氧气被组织的细胞利用，因此血液中的氧气含量下降，所以：血液从________血变成_________血。（9分）

答案

氧气有机物能量血液静脉动脉动脉静脉

呼吸作用指的是细胞利用氧，将有机物分解成二氧化碳和水，并且将储存在有机物中的能量释放出来，供给生命活动的需要，人吸气时，进入肺泡的氧穿过肺泡壁以及缠绕在肺泡壁上的毛细血管壁进入血液，血液流动将氧带到身体的各个组织细胞；而组织细胞利用氧分解有机物，产生的二氧化碳进入血液，随着血液穿过毛细血管壁和肺泡壁进入肺泡，再通过呼气排出体外。

完形填空

He lost his arms in an accident that claimed his father’s life who was the main   36 of support for the family. He had to   _37__ the arms of his younger brother，and his younger brother became his ___38 _ ，never leaving him alone for years. Except for writing with his toes，he was completely unable to do   _39_  in his life.
One late night，his younger brother accompanied him into the toilet and went back to __40__ . But being so   41___，his younger brother fell asleep，leaving him on the toilet for two hours. As the two brothers grew up together，they had their share of problems and they would often __42__ . His younger brother wanted to live   _43__ from him，living his own life，as many normal people do. So he was   44 __ and didn’t know what to do.
A   _45__ misfortune befell(降临) a girl. One night her mother，who suffered from mental illness ___46_ . So her father went out looking for her mother，leaving her alone at home. She tried to prepare a  __47_  for her parents，only to overturn the stove， _48 __ in a fire which took her hands away.
Though her elder sister who was studying in another city，showed her   _49__ to take care of her，she was determined to be completely   _50__ . At school，she always studied hard.
One day，the boy and the girl were both invited to appear on a television interview program. They were both asked to write something on a piece of paper with their toes. The boy wrote： My younger brother’s arms are my arms； 51_ the girl wrote: Broken wings，flying heart.
Disasters can    52_ at any time. If you choose only to complain and    53   from the ordeal(苦难的经历)，it will always follow you wherever you go. But if you decide to be       ___54   ，the hardship will turn out to be a(n)   55  on which new hopes will arise.

B．heart-broken

C．kind-hearted

D．heart-warming

B．disappeared

A．willingness

C．contribution

A．independent

判断题

电缆通道、夹层及管孔等应满足电缆弯曲半径的要求，110（66）kV及以上电缆的支架应满足电缆蛇形敷设的要求。（）