短文改错。

     Did you enjoy yourself yesterday? I suppose you do. But I'd like to tell you what a bad day I had yesterday.

Everything just went wrongly. On the morning, my alarm clock didn't ring, since I woke up an hour late. I was

in such a hurry that I burnt my hand when I was cooking the breakfast. Then I ran out of the house to catch

the 8:30 buses. This is the bus I usually take. But, you may laugh, I missed it of course. I am very unhappy,

and scared as well because teacher hates the students coming late to school. So I ran three miles to school only

to found that nobody was there. The school was quiet but peaceful. Our classroom was locked. I realized that

moment: It was Sunday.

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医疗保险基金筹集资金的原则是（）

A、以支定收

B、以收定支

C、收支平衡

D、略有结余