某人因有机磷农药中毒，致使神经纤维末梢释放的乙酰胆碱不能失活_爱下问搜题

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问题单项选择题

某人因有机磷农药中毒，致使神经纤维末梢释放的乙酰胆碱不能失活而作用加强。患者不会出现的症状是（）

A.消化道运动增强，腹痛，腹泻

B.瞳孔缩小，视力模糊

C.肌肉震颤，抽搐

D.皮肤干燥，无汗

E.支气管平滑肌收缩，呼吸困难

答案

参考答案：D

解析：有机磷农药可以抑制胆碱酯酶活性，使胆碱能纤维末梢释放的乙酰胆碱不能及时水解失活而大量积聚。积聚的乙酰胆碱在副交感神节后纤维和支配汗腺的交感神经节后纤维末梢发挥M样作用，产生广泛的副交感神经系统兴奋的表现，如支气管痉挛而出现的呼吸困难，以及瞳孔缩小、心率变慢、血压下降、流涎、大小便失禁等，同时出现大汗淋漓。积聚的乙酰胆碱在身体运动神经末梢和交感神经节前纤维发挥N样作用，产生骨骼肌颤动，脸色苍白等症状。

完形填空

An old woman has two large pots, one on each end of a pole（扁担）. She carried the pole with the pots（壶）__    __ her neck.
One of the pots had a crack（裂缝）in it while the other pot was perfect and always filled a full pot of water. At the end of the long __    _ from the well（井）to the house, the cracked pot _     only half-full left.
For two years this happened daily, with the woman bringing home only __    ___ pots of water. Of course, the perfect pot was _    __. But the poor cracked pot was ashamed of its own imperfection.
One day, the cracked pot spoke to the woman _    __ the well:“I am ashamed of myself because this crack in my side causes water to leak out all the way back to your __    __.”
The old woman smiled:“Did you notice that there are ___    __ on your side of the path, but not on __    __ pot’s side? That’s because I have __    _ known about your crack, so I __    __ flower seeds（籽）on your side of the path. And every day while we walk back, you ___    __ them.” She added, “ For _    _ years I have been able to pick these beautiful flowers to decorate（装饰）the table. Without you, being just the ___    ___ you are, I would not have this beauty.”
Each of us has our own cracks. But it’s these __    _ that make our lives together so interesting and meaningful.

B．one and a half

D．half and one

A．decorations

多项选择题

关于子宫破裂，正确的描述与认识是（）

A.子宫无瘢痕，破裂均发生于第二产程

B.破裂的过程可分为先兆子宫破裂和破裂两个阶段

C.对于子宫破裂者，应尽早行全子宫切除术

D.多发生于经产妇

E.破裂前有时无病理性缩复环