促进患者心理舒适，必须根据导致不适的原因而采取有针对性的护理措施。（）

某地区失依儿童、家境贫困儿童、受艾滋病影响儿童等特殊儿童较多。社会工作者在这一地区收集这些特殊儿童的基本信息，了解他们生活中的风险，并对有需要的儿童提供及时有效的救助。社会工作者在此工作中扮演的主要角色是（）。

A.支持者

B.保护者

C.教育者

D.中间人

循环气中的氩浓度主要通过（）控制。

A、循环气连续排放

B、洗涤塔吸收

C、去脱碳系统脱除

D、与氧气反应

单纯羊奶喂养的小儿容易患下列哪种贫血（）

A.营养性缺铁性贫血

B.维生素B缺乏性巨幼细胞贫血

C.叶酸缺乏性巨幼细胞贫血

D.维生素B6缺乏性贫血

E.感染性贫血

阅读理解。

     We can achieve knowledge either actively or passively. We achieve it actively by direct experience,

by testing and proving an idea, or by reasoning.

     We achieve knowledge passively by being told by someone else. Most of the learning that takes place

in the classroom and the kind that happens when we watch TV or read newspapers or magazines is

passive. Conditioned as we are to passive learning, it's not surprising that we depend on it in our

everyday communication with friends and co-workers.

     Unfortunately, passive learning has a serious problem. It makes us tend to accept what we are told

even when it is little more than hearsay and rumor(谣言).

     Did you ever play the game Rumor? It begins when one person writes down a message but doesn't

show it to anyone. Then the person whispers it, word for word, to another person. That person, in turn,

whispers it to still another, and so on, through all the people playing the game. The last person writes

down the message word for word as he or she hears it. Then the two written statements are compared.

Typically, the original message has changed.

     That's what happens in daily life. The simple fact that people repeat a story in their own words

changes the story. Then, too, most people listen imperfectly. And many enjoy adding their own creative

touch to a story, trying to improve on it, stamping(打上标记)it with their own personal style. Yet those

who hear it think they know.

This process is also found among scholars and authors: A statement of opinion by one writer may be

restated as a fact by another, who may in turn be quoted by yet another; and this process may continue,

unless it occurs to someone to question the facts on which the original writer based his opinion or to

challenge the interpretation he placed upon those facts.

1. According to the passage, passive learning may occur in _______.

A. doing a medical experiment    

B. solving a math problem

C. visiting an exhibition    

D. doing scientific reasoning

2. The underlined word "it" in Paragraph 2 refers to _____.

A. active learning

B. knowledge

C. communication    

D. passive learning

3. The author mentions the game Rumor to show that _____.

A. a message may be changed when being passed on 

B. a message should be delivered in different ways

C. people may have problems with their sense of hearing

D. people tend not to believe in what they know as rumor

4. What can we infer from the passage?

A. Active learning is less important.

B. Passive learning may not be reliable.

C. Active learning occurs more frequently.

D. Passive learning is not found among scholars. 

哪些是检查膝关节半月板损伤的方法（）

A.Apley试验

B.McMurray试验

C.抽屉试验

D.侧方应力试验

E.Lachman试验