医务人员的职业道德，医务人员应具备的思想品质，医务人员与病人、社会以及医务人员之间关

用纯种的黄色圆粒豌豆与绿色皱粒豌豆杂交，F₁全部是黄色圆粒，F₁自交的F₂，在F₂中杂合的绿色圆粒有4000个，推测纯合的黄色皱粒有[ ]

A．2000个

B．4000个

C．6000个

D．8000个

不等式ax²+bx+c＞0的解集为{x|-1＜x＜2}，则a（x²+1）+b（x-1）+c＞2ax的解集为[ ]

A、{x|0＜x＜3}

B、{x|x＜0或x＞3}

C、{x|-2＜x＜1}

D、{x|x＜-2或x＞1}

在一次车祸之后，梁群兰的丈夫肇事逃逸，她独自承担起照顾伤者、筹集治疗费用的重任，期间，母亲去世，两个双胞胎女儿少人照顾，陷于贫困的家庭更是雪上加霜，但这些都没有阻止梁群兰为了承担责任的努力。她因此被评为2006年度十大法制人物，她的事迹告诉我们 [ ]

①做人不能因承担责任要付出代价而逃避责任②承担责任，才能获得社会的承认和赞誉③面对责任要做出正确的选择④承担责任要付出沉重的代价、得不偿失

A．①②④

B．②③④

C．①②③

D．①③④

阅读理解。

     Sichuan (China Daily)-The beginning of 2007 will see another mass of graduates fresh from the campus

hunting for jobs.

     Sichuan University has done something special to help its graduates. One morning last month, a lady

stopped her Porsche (保时捷豪华跑车) in front of the students' canteen (食堂). She stepped out of her

expensive car and began to polish shoes for the students who were passing by. Later it was discovered that

she was a special lecturer who had been invited to talk to students on career development.

     Li Hui, 42, started from scratch (白手起家) in 1998 and has expanded her shoe-polishing service from

a single one-person stand on a street to a chain of 2,000 stands that operate in supermarkets, hotels and office

buildings.

     Li Hui said, "Apart from the existing and advertised job opportunities, there are plenty of other ways that

people can try to make money. There is nothing ignoble if you are doing an off-line business on your own,

such as car washing, house cleaning, shoe polishing, etc."

     It is to be hoped that such a successful grassroots woman as Li Hui will give the coming rush of job

hunters an insight into the job market in another way.

1. According to the passage, Li Hui is a _____. [ ]

A. canteen manager

B. university teacher

C. businesswoman

D. taxi driver

2. Why did Li Hui polish shoes for the students?  [ ]

A. To earn money from them.

B. To show the students how to polish shoes.

C. To set an example to job-hunting graduates.

D. To show that shoe polishing is quite an easy job.

3. The students can learn from what Li Hui said that _____. [ ]

A. no job is hard if you have a will to do it

B. women can be successful in all careers as men

C. everyone can be rich and famous through hard work

D. there are plenty of opportunities to succeed for everyone

4. What would be the best title for the news report? [ ]

A. A Successful Woman

B. A Rich Shoe-Polisher

C. Off-Line Jobs Help Make More Money

D. Self-Employment-A New Way Out for Job Hunters

埋地管道进行防腐时，查绕玻璃丝布应紧密无褶皱、压边宽度在多少至多少？（）

A、20-30

B、30-40

C、40-50

D、50-60