问题 单项选择题 A1/A2型题

孕妇,王某,32岁,孕2产0,孕36周,既往有过一次早产史。今晨起自觉有轻微腹痛,故来院急诊。产科检查:胎方位LOA,胎心率148次/分,胎膜未破,未临产,但有轻微宫缩。故收治入院。

以下对孕妇的处理措施中,错误的是()

A.给予间歇吸氧

B.自数胎动

C.缩宫素抑制宫缩,预防早产

D.胎心监护

E.左侧卧位

答案

参考答案:C

问答题

某化学实验活动小组的同学为了探究实验室中久置氢氧化钠固体的成分,进行了有关实验,请你参与他们进行的探究活动:

【猜想与假设】

猜想Ⅰ:全部是NaOH;

猜想Ⅱ:全部是Na2CO3

猜想Ⅲ:______.

【实验与探究】

(1)实验如下:

 实验操作步骤实验现象  结论及解释
步骤一:取少量固体样品于试管中,加蒸馏水完全溶解,然后加入足量的稀盐酸. 实验过程中始终没有气泡产生. 则证明猜想______成立.
步骤二:取少量固体样品于试管中,加蒸馏水完全溶解,然后滴加氢氧化钡溶液. 实验过程中产生

______.

则证明猜想Ⅱ或Ⅲ成立,此过程中发生反应的化学方程式为______.
(2)为了进一步的验证猜想结果,小明同学提出了如下实验方案:继续步骤二的实验,过滤,然后向滤液中滴加无色酚酞试液,若酚酞变红,则猜想Ⅲ成立;若酚酞不变红,则猜想Ⅱ成立.

     小华同学立即对小明同学的方案提出了质疑,通过查阅资料知道,氯化钡溶液程中性,不能使无色酚酞试液变红,但碳酸钠溶液呈______性(填“酸”或“减”)能使酚酞变红.因此,他认为该方案的操作步骤中应该改进的是______.

(3)实验小组的同学展开讨论,又提出了一个定量试验方案,通过测定产生沉淀的质量来证明猜想Ⅱ或Ⅲ成立.试验如下:准确称量m克固体样品于试管中,加热蒸馏水完全溶解,然后滴加足量氯化钡溶液,充分反映后过滤、洗涤、干燥称的沉淀的质量为n克,若猜想Ⅱ成立,则m与n的关系式为(用含m和n的等式或不等式表示,下同)______;若猜想Ⅲ成立,则m与n的关系式又为______.

【反思与交流】久置固体氢氧化钠变质的原因是(用化学方程式表示)______.

阅读理解

Christopher Thomas, 27, was a writer by night and a teacher by day when he noticed he was always tired and was losing weight fast. Diagnosed with diabetes(糖尿病), Thomas would need to inject himself with insulin(胰岛素) three times a day for the rest of his life or risk nerve damage, blindness, and even death. And if that weren't bad enough, he had no health insurance.

After a month of feeling upset, Thomas decided he'd better find a way to fight back. He left Canton, Michigan for New York, got a job waiting tables, nicknamed himself the Diabetic Rockstar, and created diabeticrockstar.com, a free online community for diabetics and their loved ones—a place where over 1,100 people share personal stories, information, and resources.

Jason Swencki’s son, Kody, was diagnosed with type diabetes at six. Father and son visit the online children's forums(论坛) together most evenings. "Kody gets so excited, writing to kids from all over," says Swencki, one of the site's volunteers. "They know what he's going through, so he doesn't feel alone."

Kody is anything but alone: Diabetes is now the seventh leading cause of death in the United States, with 24 million diagnosed cases. And more people are being diagnosed at younger ages.

These days, Thomas's main focus is his charity(慈善机构), Fight It, which provides medicines and supplies to people—225 to date—who can't afford a diabetic's huge expenses. Fight-it.org has raised about $23,000—in products and in cash. In May, Thomas will hold the first annual Diabetic Rockstar Festival in the Caribbean.

Even with a staff of 22 volunteers, Thomas often devotes up to 50 hours a week to his cause, while still doing his full-time job waiting tables. "Of the diabetes charities out there, most are putting money into finding a cure," says Bentley Gubar, one of Rockstar's original members. "But Christopher is the only person I know saying people need help now."

小题1:Which of the following is true of Christopher Thomas?

A.He needs to go to the doctor every day.

B.He studies the leading cause of diabetes

C.He has a positive attitude to this disease.

D.He encourages diabetics by writing articles.小题2: Diabeitcrockstar.com was created for _________.

A.diabetics to communicate

B.volunteers to find jobs

C.children to amuse themselves

D.rock stars to share resources.小题3:According to the text, Kody ______.

A.feel lonely because of his illness

B.benefits from diabeticrockstar.com

C.helps create the online kid’s forums

D.writes children’s stories online小题4:What can we learn about Fight It?

A.It helps the diabetics in financial difficulties.

B.It organizes parties for volunteer once a year.

C.It offers less expensive medicine to diabetics.

D.It owns a well-known medical website.小题5:The last paragraph suggests that Thomas ______.

A.works full-time in a diabetes charity

B.employs 22 people for his website

C.helps diabetics in his own way

D.ties to find a cure for diabetes