皮亚杰认为，个体的认知结构是通过哪两个过程的循环而不断发展？（）A.调整过程； B.

第一次国共合作最后破裂的标志是[ ]

A．国民党右派反对三大政策

B．蒋介石制造“四一二” * *

C．国民党右派的“宁汉合作”

D．汪精卫制造“七一五” * *

以下关于计算机中常用编码描述正确的是

A．只有ASCII码一种

B．有EBCDIC码和ASCII码两种

C．大型机多采用ASCII码

D．ASCII码只有7位码

Visitors to this country are normally admitted for six months, but foreign students can usually stay for one year. They must (52) an educational institution, and they are required to study for a minimum of fifteen hours a week on a (53) course. Prospective students have to show that they can afford their studies, and that they have sufficient (54) resources to support themselves (55) in this country.

In order to work here the foreigner needs a work permit, (56) must be applied for by his prospective employer. The problem here is that the Department of Employment has the right to grant or (57) these permits, and there is little that can be done (58) it; it would be extremely unwise for a foreign visitor to work (59) a permit, since anyone doing so is liable to immediate deportation (驱逐出境). There are some people from the Common Market countries, who are often given (60) residence permits of up to five years. Some other people, such as doctors, foreign journalists, authors and others can work without permits, and foreign students are normally allowed to (61) part-time jobs while they are studying here.

55().

A.after 

B.but 

C.while 

D.before

5岁患儿突发寒战、高热，左大腿下端深压痛，患肢不敢活动，白细胞总数升高。

最有意义的诊断方法是

A．X线检查

B．CT

C．血常规

D．早期局部分层穿刺

E．局部活检

一家长带小孩来医院进行体格检查，该患儿体格检查结果如下：体重10.5kg，身长80cm，前囟已闭，出牙12颗，胸围大于头围。患儿父母体健，双亲无遗传病史，患儿出生后正常，母乳喂养至6个月后改人工喂养，按时添加辅食。既往体健，无创伤及惊厥史。经一系列检查，患儿无遗传代谢、内分泌疾病，智力正常。

下列哪项动作该小儿尚不能进行（）

A.独走

B.弯腰拾东西

C.能爬台阶

D.能蹲着玩

E.能跑