等渗性脱水的血清钠浓度是()。 A.60~100mmol/L B.100~120

题型:单项选择题

问题:

等渗性脱水的血清钠浓度是()。

A.60~100mmol/L

B.100~120mmol/L

C.130~150mmol/L

D.150~170mmol/L

E.170~200mmol/L

考点:北京住院医师儿内科Ⅰ阶段消化专业消化专业题库
题型:单项选择题

锚杆或锚索加固边坡适用于潜在滑动面大于()的不稳定岩土体?

A.5m

B.20m

C.30m

D.10m

题型:单项选择题

关于如图所示探究燃烧条件的实验中,说法不正确的是

[ ]

A.气球的作用是收集磷燃烧产生的白烟,防止污染空气。

B.观察到的现象:试管和烧杯中的白磷能燃烧,红磷不能燃烧。

C.热水的作用是:升高温度,隔绝空气

D.由此实验得出燃烧的条件是:可燃物与氧气(或空气)接触,温度达到着火点。

题型:单项选择题

产业政策的( )是产业结构的优化和升级以及各产业内部运营的高效化。因而,产业政策的效果往往是中长期的,它对短期经济活动的影响比较有限。

A.核心

B.目标

C.方针

D.对象

题型:单项选择题

第三部分阅读理解

阅读下列短文,从每题所给的四个选项(A、B、C和D)中,选出最佳选项。

By analyzing academic data from 10 states, representing the testing of more than 7.2 millions of youths, U.S. researchers found that gender differences in math scores were extremely small among all ethnic groups in grades 2-11.

These findings are in contrast to earlier results from 1990 that indicate measurable differences favoring males in complex problem-solving, beginning in the high school years.

Janet Hyde from University of Wisconsin and colleagues reported their study results in the journal Science on Friday.

Currently, women are largely absent from the highest levels of careers in mathematics, the physical sciences, and engineering. In the United States, Ph.D. programs in engineering currently average only about 15 percent women, and similar statistics have led to stereotypes (成见)about girls and women lacking in mathematical ability.

Now, it is clear that the general population no longer shows a gender difference in mathematical skills, according to this latest report.

And this new data on academic performance in the United States shows that students are tested frequently on "recall" and "skill/concept" items, but rarely on "strategic thinking"(战略思维) or "extended thinking" concepts.

If standardized tests do not assess (评估)the sorts of reasoning that are crucial to careers in science and math, then the skills may not be taught, putting American students at a disadvantage to students in other countries where testing and instruction focuses on more challenging content. "This is a gap that should be fixed," Hyde said.

56. What is the best title of the passage?

A. A new study result about math.                   B. No gender differences in math.

C. Girls are not good at math.                       D. Girls do better in math than boys.

57. The underlined word “crucial” in the last paragraph most probably means______.

A. necessary      B. unimportant         C. important    D . cruel

58. What Hyde said in the last paragraph means that ________.

A. standardized tests should assess the sorts of reasoning so that the skills may be taught

B. testing and instruction focuses on more challenging content in the USA

C. students in other countries are cleverer than American students

D. students should be tested frequently on "recall" and "skill/concept" items

59. The passage is most probably taken from _______.

A. a science magazine B. a research paper        C. a personal diary D. a newspaper

题型:单项选择题

泮库溴铵为

A.拟肾上腺素药

B.抗肾上腺素药

C.拟胆碱药

D.除极化型肌肉松弛药物

E.非除极化型肌肉松弛药物

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