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问题 单项选择题

中年男性，原有风湿性心脏病痛史，因持续发热、乏力、纳差来诊，拟诊为亚急性感染性心内膜炎，下列哪个体征不可能出现（）

A.环形红斑

B.瘀点

C.心脏杂音可以变化

D.三度房室传导阻滞

E.脾大伴脾区摩擦音

答案

参考答案：A

问答题 简答题

简述《幼儿园教育指导纲要(试行)》中对于科学教育的目标。
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单项选择题

For each blank, choose the best answer from the four choices and write down on the answer sheet.

It is claimed that Al applications have moved from laboratories to the real world. However, conventional von Neumann computers are (66) for Al applications, because they are de- signed mainly for numerical processing. In a larger yon Neumann computer, there is a larger ratio of memory to processing power and consequently it is even less efficient. This (67) remains no matter how fast we make the processor because the length of the computation becomes dominated by the time required to move data between (68) and memory. This is called the yon Neumann (69) . The bigger we build the machines, the worse it gets. The way to solve the problem is to diverse from the traditional architectures and to design special ones for Al applications. In the research of future Al architectures, we can take advantages of many (70) or currently emerging concepts. in computer architecture, such as dataflow computation, stack machines, tagging, pipelining, systolic array, multiprocessing, distributed processing, database machines, and inference machines.

（70）是（）

A.existing

B.new

C.used

D.old-fashioned
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