“You must be mad！” said my friends. “Giving up your job now， when there isn't much chance

“You must be mad！” said my friends. “Giving up your job now， when there isn't much chance of finding another one， ever！”
But I had already come to my lonely decision. To wake up in the morning with a sense of fear， to force a hasty breakfast down an unwilling throat and then to set off for work with pounding heart and frozen face had become habitual， and I had turned to tranquilizers(镇定剂) to help me along.
It hadn't always been as bad as this. Ten years before I had managed quite well.
I， in common with most other teachers， am rather self­critical， and I knew now I was no longer “managing”.My classes were noisy， the children were not learning very much， and my attempts to cope with changing teaching methods produced very little effect. At one time my very presence in the doorway would be enough to ensure a partial silence. Now they give a vague(含糊的) “Hello， Miss”， and carry on. I had run out of enjoyment and enthusiasm. It was time to stop.
Was it all my own failure？ In fairness to myself， I don't think it was. I had plenty of ideas， I loved my subject， and I liked children.
I had been idealistic. But the reality I faced was bored children， over­stimulated(刺激)by video­watching the night before and tired out by a late bedtime. They were given the wrong food at the wrong time， who came without breakfast to school and then stuffed themselves with gum and chocolates bought on the way； who were “high” with hunger in class and talked restlessly as the cooking smell from the school kitchen came drifting (漂) to all floors.
I had been trying to create the basic conditions in which teaching becomes possible， but I had failed， and no longer had the stomach for the job.
64.The reason why the writer decided to give up her job was probably that　　　　.
A.teaching children wasn't challenging
B.she took no pride in her work
C.teaching had become too much for her
D.she disliked the new teaching method
65.“My very presence in the doorway would be enough to ensure a partial silence” means“　　　　”.
A.I'd very well make some students stop talking simply by standing in the doorway
B.when I came to the doorway， the class would immediately quiet down
C.all the students would become silent on my turning up in the doorway
D.my appearance in the doorway could at least comfort the class
66.The following are all reasons that children couldn't concentrate in class EXCEPT　　　　.
A.they were tired out because they went to bed too late
B.they were burdened with too much homework
C.they were not properly fed by their parents
D.they were over excited by video­watching the night before
67.We can infer from the passage that the writer　　　　.
A.had no love for children at all
B.never truly enjoyed teaching
C.found it difficult to give up her job
D.felt extremely nervous about each coming dayC

(答案→)C 解析：

感谢回答，我学习了