下列物质间的相互转化,不能一步实现的是( ) A.CO2⇌CaCO3 B.O2⇌

题型:选择题

问题:

下列物质间的相互转化,不能一步实现的是(  )

A.CO2⇌CaCO3

B.O2⇌CO

C.CO2⇌H2CO3

D.O2⇌H2O

考点:物质的相互转化和制备
题型:选择题

戴某,女,39岁。患肝炎多年,近二十天来腹胀大如鼓,脘腹撑急,烦热口苦,渴不欲饮,面目皮肤发黄,大便秘结,小便黄赤,舌边尖红,苔黄腻,脉弦数。此时辨证属于()

A.湿热并重型黄疸

B.湿热蕴结型鼓胀

C.寒湿困脾型鼓胀

D.胃肠积热型便秘

E.湿重于热型黄疸

题型:选择题

哪一种表现对提示病变活动没有意义()

A.毒血症状明显

B.X线空洞增大

C.痰菌阳性

D.PPD试验阳性

E.ESR增快

题型:选择题

Part 1


·Read the article below and choose the best sentence from the list on the next page to fill each of the gaps.
·For each gap (1-8) mark one letter (A-H) on the Answer Sheet.
·Do not mark any letter twice.

When the Young Take Their Lives


A few weeks ago, I received a particularly disturbing page. "A 22-year-old woman is in the emergency room with a gunshot wound to the head," my chief resident told me. (1) . The woman, a recent college graduate, was starting to show signs of brain death. Over the next several hours, we worked to preserve the life she had tried to throw away.
(2) . In the 30 years from 1950 to 1980, the annual suicide rate among college-age women has almost doubled, from 3.9 deaths per 100,000 to 7.0 per 100,000, while the rate among college-age men has tripled, from 10 per 100,000 to 32 per 100,000 a year. (3) .
Students kill themselves at all times of year, but attempted suicides begin to go up in the fall, according to the National Institute of Mental Health. Often the immediate cause seems to be a recent rejection, disappointment or academic failure.
(4) . Even trained mental-health professionals have made mistakes. But there are warning signs you can watch for in friends and loved ones, such as withdrawing from all social activities, dramatic changes in personality—including suddenly becoming much happier or calmer-significant shifts in sleeping or eating habits and giving away cherished personal items.
(5) . Studies of suicide survivors show that often just five minutes elapse from the time someone thinks about committing suicide until the actual attempt.
Finally, it is OK to come right out and ask friends or family members whether they are thinking of suicide. (6) . Be sure to let them know that they are not alone and that help is available through school counselors and mental-health hot lines, in hospitals and now online.
Through the years, I have treated many patients who have attempted suicide. (7) . Our 22-year-old patient is awake now and even talking a bit. I’m optimistic about her physical recovery but disquieted about her chances overall. (8) . What no one knows is whether we will be able to pick up the pieces one more time.
  • A. I do it with the sincere hope that they will get better
  • B. "Oh, and it looks self-inflicted," he added
  • C. The experts will tell you that having tried to kill herself once, she is at a greater risk of trying again
  • D. This year’s toll for adults aged 19 to 24 is expected to reach 1,000 deaths
  • E. Don’t get fooled into thinking that all people who commit suicide have carefully worked out a plan in advance
  • F. You won’t be giving them any ideas
  • G. Trying to determine whether a young person is suicidal can be difficult
  • H. Her predicament made me wonder, once again, what drives people to suicide and why young people resort to such a desperate measure

题型:选择题

下图是低倍显微镜下观察到的血液的永久涂片简图,据图回答问题:

(1)观察到细胞数量最多的是[ ]__________,形体最大的是[ ]__________。

(2)A和D最大的区别是A细胞结构中具有__________。

(3)[ ]__________除运输营养物质和废物外,还能运载血细胞。

(4)选出下列与A_____、B_____、C____相关的正确叙述,将序号分别填在对应的括号里。

①能携带和运输氧及少量二氧化碳。

②能吞噬细菌和衰老与病变的细胞。

③成熟的细胞无核,红色,呈两面凹的圆饼状。

④患急性炎症验血时,其数目剧增。

⑤该细胞容易与氧结合,也容易与氧分离。

⑥有外伤时,具有止血和加速凝血作用。

题型:选择题

各无线电台站频率如需要变更,应当报告当地政府,并按正式变更通知实施。

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