患者，女性，58岁，胸骨后压榨性疼痛5h，并伴左肩放射痛，多汗、恐惧。患者应采取的最

已知函数f（x）=x³-ax²+bx+c．

（Ⅰ）若函数y=f（x）的图象上存在点P，使P点处的切线与x轴平行，求实数a，b的关系式；

（Ⅱ）若函数f（x）在x=-1和x=3时取得极值，且其图象与x轴有且只有3个交点，求实数c的取值范围．

填一填。

1．汉字大约产生于________多年前，它经历了漫长的演变过程。

2．最初有文字的时候，人们是在________、________等平整的东西上用刀刻字，或用有________的矿石画字。

3．甲骨文是________年间________发现的。

认真阅读下列短文，并根据所读内容在文章后表格中的空格里填人一个最恰当的单词。

注意：每个空格只填1个单词，请将答案写在答题卡上相应题号的横线上。

If Mickey Mouse is a westerner who has captured the world，Hello Kitty is the world’s sweetheart from Asia. With its two innocent black eyes and the cute ribbon on its ear，this white-faced kitten has captivated(迷住）the hearts of women of all ages since 1974.

Hello Kitty is found on more than 50 thousand items，including toys，school supplies，make-up and even neckties.

To celebrate the character’s 38' birthday，an exhibition called“Inside Kitty" is underway at the Seongnam Arts Center in Yatab-dong.

“Kitty was not popular at all at first，even in Japan. Only since 1985，11 years after it was born，have people started to pay attention to it，”Yuko Yamaguchi，one of the designers of the

character，told the press.

“Hello Kitty was only for kids then. But in 1987，I got a letter from a high school student who said that her friends teased her because she had a Hello Kitty product. She asked the com-pany to make something that did not look strange for her to carry around. Since then we’ve tried to come up with things that all ages can enjoy，”Yamaguchi said.

Hello Kitty became popular after being displayed in Anna Sui boutiques(精品店）in the United States. Young women from all over the world have been in love with the character ever since. The boutique of MAC，a make-up brand，packed，on the day the brand was released，its first products made in collaboration with Hello Kitty.

“The character has to communicate with people. It should change over time，and always

stay fashionable，＂Yamaguchi said. “Inside Kitty" starts by viewing the past of the character. Kitty fans will be delighted to see Hello Kitty items from throughout the past 38 years on display.

产褥期是指（）

A.产妇全身各器官除乳腺外，从胎盘娩出至恢复或接近未孕状态所需的时期

B.产妇全身各器官除子宫外，从胎盘娩出至恢复或接近未孕状态所需的时期

C.产妇全身各器官除 * * 外，从胎盘娩出至恢复或接近未孕状态所需的时期

D.产妇全身各器官除外阴外，从胎盘娩出至恢复或接近未孕状态所需的时期

E.产妇全身各器官除会阴外，从胎盘娩出至恢复或接近未孕状态所需的时期

某医生选择适当资料计算相应指标，进行t检验。应计算的指标是（）。

A、变异系数

B、几何均数

C、均数

D、全距

E、中位数