不宜实施腹腔镜手术的病人是（）。 A.既往曾行剖腹产手术，现准备行胆囊切除术 B.年

巨幼细胞贫血的检查不包括（）。

A.胃酸降低实验阳性

B.空腹血清胃泌素显著增高

C.尿高半胱氨酸24小时排泄量增加

D.血清间接胆红素增高

E.血象提示小细胞性贫血

“珍爱生命，拒绝毒品”是每个公民的责任，但是在某些娱乐场所，还有人服用俗称摇头丸的毒品．该毒品能使人手舞足蹈，呈癫狂状态，严重危害人的身心健康和社会稳定，有一种“摇头丸”的化学式为C₁₂H_xO₂N，相对分子质量为209，试回答下列问题：

（1）该物质由 ___  种元素组成，它属于 ___ （填“无机物”、“有机物”）

（2）该物质的一个分子中，含氢原子  ___ 个．

（3）该物质中碳元素的质量分数为  ___  ．（保留一位小数）

啤酒厂的成品库，仓储的原则是先进先出。这就要求合理的运筹和布局。

白血病细胞HLA-DR多呈阴性的是（）

A.AML-M₁

B.AML-M₂

C.AML-M₃

D.AML-M₄

E.AML-M₅

The first and most important agents of socialization are the people who care for infants. In the earliest months, messages from nurturers constitute the child’’s basic understanding of the world around it. This is the infant’’s first introduction to the language that shapes perception and elicits emotion.Another powerful source of information and socialization is the friendship of peers. Peers are equals that one can deal with on the same level as oneself, whereas parents are superiors. The heavy emotional overlay of family relationships makes some kinds of learning difficult.Much formal socialization is placed in the hands of professionals. Teachers from kindergarten on are specifically designated agents of socialization. Ideally, a teacher is one who has both knowledge and the skills to present it. During the course of teaching their subjects, classroom instructors provide role models and attempt to convey the excitement of learning itself.In earlier times, parents, friends and teachers would comprise the list of primary childhood socializers. Children’’s books, comics and magazines might also have been mentioned as sources of information on norms and role models. Today one must add three powerful indirect or non-personal socialization agents: radio, movies and television. Many people learn about politics, form a vision of well-being, and develop attitudes towards others from what they see on the screen and hear through the speakers.

The author’s chief agents include the following EXCEPT the________.

A．family

B．group

C．school

D．internet