医患关系要做到真诚相处，最主要的是（） A.关系和谐 B.尽职尽责 C.平等相待 D

若三条线段的长分别为3，4，5；则用这三条线段组成   ▲   三角形（填锐角或直角或钝角）

患者女性，73岁，因“右足4趾破溃、肿痛10日”来诊。诊断：2型糖尿病足，高血压病3级，冠心病、起搏器植入术后，外周动脉硬化闭塞症，双下肢静脉血栓形成。患者入院第1日给予华法林3.75mg，每日1次，口服；螺内酯（安体舒通片）20mg，每日2次，口服。国际标准化比（INR）第2日为1.16，第6日为1.12。第12日给予华法林。基因检测：CyP2C9*1*1酶野生型，VKORC1-1173T/T突变纯合子。根据基因型结果计算华法林剂量为每周22mg（平均每日3.1mg）。第21日INR值为1.21。

该患者INR值不达标的可能原因有（）

A.患者CyP2C9酶和VKORC1基因型对华法林剂量影响不大

B.华法林起始剂量计算公式错误

C.螺内酯为肝药酶诱导剂，可加快华法林体内代谢

D.患者可能食用富含维生素K的食物

E.患者可能食用富含维生素C的食物

F.患者可能食用富含维生素A的食物

下列通信资费中，属于零售业务资费的是（）。

A.短信业务资费

B.邮政网间结算费

C.电信互联资费

D.电信终接费

Tests administered（实施）to most elementary and high-school students in the United States exert an unfavorable influence on science and math teaching, according to a new ＄1 million study performed for the National Science Foundation. And because schools with high minority enrollments（入学）generally place a greater reliance（相信）on scores from these tests， the study finds, there tends to be “a gap in instructional emphases between high and low minority classrooms that differs from our national concern for the quality of education.”

George F. Madaus and his colleagues at Boston College analyzed not only the six most widely used national standardized tests, but also the tests designed to accompany (go with) the four most commonly used science and math texts in fourth-grade, eighth-grade, and high-school classrooms. Though curriculum（teaching program）experts argue that schools should place greater emphasis on problem solving and reasoning, the new study shows that the tests focus on lower-level skills—primarily mechanical memorization of routine formulas（公式）.

Researchers surveyed more than 2,200 math and science instructors，interviewing in depth some 300 teachers and administrators. Especially in schools with high minority enrollments, teachers reported feeling pressured to help students perform well on these tests. Some states judge schools and some schools determine teacher assignments（工作安排）based on students' test scores.

“With so much worry,” Madaus says, “teachers feel forced to focus their instruction on drilling what the tests will measure—at the expense of the more valuable，higher-level skills.”

1. The author of this article states that ___  _ .

A. the tests don't affect teaching in most elementary and high schools

B. the science and math teaching is influenced by the present tests

C. no study is performed on tests for the National Science Foundation

D. the United States exerts a strong influence on science and math teaching

2. It can be inferred that in high minority classrooms ____  _ ．

A. the students can not get high score from the tests   B. scores from the tests are not important

C. instructional emphases are unfavorable   D. teaching doesn't focus on the quality of education

3. According to the second paragraph，the study has discovered that ____  _ ．

A. emphasis of teaching is on problem solving and reasoning

B. curriculum is good for national standardized tests

C. the tests mainly center around the memorization of some formulas

D. routine formulas are not useful for students to memorize

4. According to Madaus' opinion，teachers are forced to ____  _ ．

A. evaluate（评估）students' skills every year    B. suffer so much worry on the texts

C. teach what will be tested                   D. focus their instruction on useful drillings

随机存储器中，有一种存储器需要周期性的补充电荷以保证所存信息的正确，它称为

A．静态RAM(SRA

B．动态RAM(DRA

C．RAM

D．Cache