患者女性，20岁。双睑下垂伴视物成双1个月，晨轻暮重。头不痛，_爱下问搜题

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问题单项选择题案例分析题

患者女性，20岁。双睑下垂伴视物成双1个月，晨轻暮重。头不痛，不发热。无咀嚼吞咽困难，无四肢无力，无呼吸困难。既往无糖尿病史。检查：双瞳孔2mm，对光反应正常，双睑下垂，左眼球上视、外展和下视无力，右眼上、下视、内收及外展均受限，向各方向注视均有复视，其余神经系统未见异常。

肌电图检查结果哪项对诊断MG有帮助（）

A.运动电位波幅降低

B.运动电位时程缩短

C.神经传导速度减慢

D.低频神经重复电刺激波幅递减

E.高频神经重复电刺激波幅递增

答案

参考答案：D

完形填空

I became a gardener when I was twelve. My early__36___of gardening may not have originated from my love for nature. It was to ___37____my parents.
At that time, we had a big yard in which a beautiful maple tree stood. But my mother often looked with __38___at this work of natural art. Those golden leaves seemed like tons of rubbish to her, “something else to ___39___!” Seeing the neighbors busy with gardening, my father ever thought it a waste of time.
At that age, I always did something___40___to whatever my parents did! If gardening were something they found____41___, I would plant a garden!
I planted some lily（百合花）seeds in the yard. But they failed to ___42___.I continued to plant sunflower seeds and roses. Wild ___43___ joy, I found the first rose bloom（开花）.One by one, the flowers bloomed their heads off. __44___, I was touched by this land of wonder.
___45___, my parents showed no interest in my garden. My father even___46___at me because he found it was ___47___to move around my garden to the driveway. To my mother’s ___48__ , I put in her vase my real roses which, in her eyes, were simply weeds____49___flowers.
Regardless of their ___50___,I kept on planting my garden and ___51___to enjoy the pleasure of gardening. Plants make such good companions: they breathe, they bloom, they___52____to care and love.
It has been many years since I made my first garden out of my desire to ___53___my parents. Today I become known as Mrs. Greenthumbs, teaching gardening and hosting a gardening show which makes my parents feel very___54_ . And now I could say it is my affection for___55___that makes me a real gardener.

B．appreciation

D．interesting

D．get through

B．troublesome

B．displeasure

C．rather than

B．encouragement

B．comfortable

D．disappointed

判断题

抽提温度升高，芳烃在溶剂的溶解度加大，芳烃回收率增加，溶剂对芳烃与非芳烃的选择性降低，芳烃纯度下降。