H-O的变异属于() A.毒力变异 B.菌落变异 C.鞭毛变异 D.耐药性变异 E.

题型:单项选择题 A1/A2型题

问题:

H-O的变异属于()

A.毒力变异

B.菌落变异

C.鞭毛变异

D.耐药性变异

E.形态变异

考点:临床医学检验技术(士)细菌的生理与遗传变异细菌的生理与遗传变异题库
题型:单项选择题 A1/A2型题

真叶从平展到黄落一般为()

题型:单项选择题 A1/A2型题
如果把分式
x
x+y
中的x、y都扩大为原来的3倍,那么分式的值______.
题型:单项选择题 A1/A2型题

Part 2


Questions 9-18


·Read the following article and answer questions 9-18 on the next page.

Train Your Body into Knowing When It’s Time to Sleep


1. A good night’s sleep actually starts in the morning. The second your eyes open, light shoots down the optic nerve and into the brain’s biological clock. There it stimulates the production of hormones that regulate growth, reproduction, eating, sleeping, thinking, remembering—even how you feel from minute to minute. "Sunlight activates the brain," says Frisca L. Yan-Go, M.D., medical director of the UCLA Sleep Disorders Center. And activating it at the same time every morning synchronizes your body’s biological clock. Then your body has a clear direction that at midnight it’s supposed to be asleep and at noon it’s supposed to be awake. Wake up at a different time every day and the clock is out of order. You feel sleepy and hung over for hours, and even when you start to feel a bit more alert after that first Starbucks (星巴克) , you really never achieve the mental edge of what you’re capable.
2. Shall we go to bed when feeling tired No, not just tired. Sleepy, as your eyes are tired and you keep losing track of what people are saying to you.
3. Sleeping from 11:30 P.M. until 2:00
  • A.M., tossing and tuning until 4, then sleeping until 6 gives you eight hours in bed but only four and a half hours of sleep. That’s a huge mismatch that can actually inhibit your sleep drive and cause insomnia all by itself. To prevent that from worsening your sleep issues, when you wake at 2:00A.M., get up and go to read a book in the living room. Being up increases your sleep drive—which just could make you sleepy enough to actually fall asleep when you return to bed. Caution: Don’t stay in bed when you’re awake. A part of your mind will begin to associate the bed with being awake rather than being asleep. And that can turn on a nasty "I’m-not-going-to-sleep!" anxiety that will speed up your engines whenever you get into bed. It’s one of the causes of chronic insomnia.
    4. You need one hour before bed to wind down and get transition from the woman-who-can-do-everything into the woman-who-can-sleep. Unfortunately, most women are not giving themselves one single second. According to the 2007 National Sleep Foundation poll, during the hour before bed, around 60 percent of us do household chores, 37 percent take care of children, 36 percent do activities with other family members, 36 percent are on the Internet, and 21 percent do work related to their jobs.
    5. Staying up late on Friday and Saturday nights and getting up late on Saturday and Sunday mornings is frequently the gift we give ourselves on weekends after a hard week at work. Yet that little gift—small as it is—is enough to screw up our biological clocks. Even if you get to bed early on Sunday night, you will not be ready to sleep, and you will not end up being the happy camper Monday morning.

    Questions 9-13


    ·For questions 9-13, choose from the list A-G which best summarize each part of the article.
    ·For each numberedparagraph (1-5), mark on letter (A-G) on the Answer Sheet.
    ·Do not mark any letter twice.A. Do household chores before bed
  • B. Hit the sheets only when sleepy
  • C. Stay up late only on Saturday nights
  • D. Give yourself an hour before bed
  • E. Wake up at the same time every day
  • F. Beware of Sunday night insomnia
  • G. Get up when awake

Paragraph 1 ______

题型:单项选择题 A1/A2型题

在软件需求分析过程中,给出需求信息的是( )。

A.程序员

B.项目管理者

C.软件分析设计人员

D.软件用户

题型:单项选择题 A1/A2型题

新中国成立后,经过60年特别是改革开放以来的建设,我国公共卫生体系初步建立,卫生服务能力明显增强。2008年全国共有卫生机构27.8万个,比1949年增加约75倍;卫生技术人员为503万人,比1949年增加9.0倍;医院和卫生院床位数为374.8万张,比1949年增加45.9倍;每千人口中医院、卫生院床位数为2.8张,远高于1949年0.15张的水平。

1949~2008年公共卫生体系发展状况统计表

年份卫生机构数(个)床位数(万张)卫生技术人员数(万人)
19493670851
195712295430104
196221798569141
196522426677153
1978169732185246
1985200866223341
1990208734259390
2000324771291449
2005298997314446
2008278337375503

1949~2008年,我国卫生机构平均每年约增加()。

A.4736个

B.4655个

C.4578个

D.4397个

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