已知M(x0,y0)为抛物线x2=8y上的动点,点N的坐标为(21,0),则y0

题型:填空题

问题:

已知M(x0,y0)为抛物线x2=8y上的动点,点N的坐标为(
21
,0),则y0+|
MN
|
的最小值是______.
考点:两点间的距离圆锥曲线综合
题型:填空题

Rose sat behind Kate in the classroom. They got on well with each other. But one day, Rose didn’t see her school IC card at lunch time. She asked her classmates and looked for it everywhere. But she couldn’t find it. Later, one girl said that she saw Kate take a card from Rose’s desk. Hearing this, Rose got very angry.

When she met Kate in the afternoon, Rose shouted, “You have stolen my card!” Hearing this, Kate began to cry, “No, no, I didn’t steal it! I only took it by mistake.” But Rose didn’t think so and she began to say bad words to Kate.

Just then a teacher came up and asked what had happened. Kate told the whole story. She said a middle school classmate of hers came to see her in the morning. She was so excited that she took the card on the desk and rushed out. Then they went for lunch happily. “I used the card, but I had thought it was mine. I didn’t know it was Rose’s until she looked for it. I was too afraid to explain it to her. So I decided to put the card back with some money secretly. I am sorry, Rose.” Kate said in a low voice.

“It’s just a misunderstanding (误会)!” said the teacher. Tears came into Rose’s eyes. Then she said, “I was very sorry, Kate! I hope we are still good friends.” Kate smiled when she heard the words. Hand in hand, they walked toward the classroom building.

小题1:Rose was very ____ when she heard someone took her IC card away.

A.quiet

B.sorry

C.excited

D.angry小题2:Kate didn’t find her mistake until ____.

A.she finished lunch

B.Rose looked for the card

C.one girl told her

D.the teacher asked her小题3:From the end of the story, we can learn that Rose and Kate would ____.

A.be good friends again

B.say sorry to the teacher

C.go on fighting later

D.explain more to each other

题型:填空题

You can't see well through a telescope unless          correctly to your sight.

A.accustomed

B.adjusted

C.admitted

D.adopted

题型:填空题

当前脑科学中最有意义的是对()的研究,这一研究将弄清人脑是如何工作的,了解人的意识、情绪、意志、情感、理智、智力等是如何由脑神经细胞产生的,将有助于回答生命和智力的起源问题,也会为进一步用机器模拟人脑开辟更为广阔的前景。

A.认知活动

B.感情活动

C.意识活动

D.神经中枢

题型:填空题

作业排序的约束条件之一是()。

A.机器故障

B.工艺条件

C.人员缺勤

D.停工待料

题型:填空题

采用借贷记账法,“资产类”账户的结构是()。

A.借方登记资产的增加,贷方登记资产的减少,余额一般在借方

B.借方登记资产的增加,贷方登记资产的减少,余额一般在贷方

C.借方登记资产的减少,贷方登记资产的增加,余额一般在借方

D.借方登记资产的减少,贷方登记资产的增加,余额一般在贷方

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