办理换证业务时，拖拉机驾驶人信息发生变化换证的，应经（）审核。 A.审核岗 B.驾驶

清末，第一个提出“德、智、体、美”四育并重的教育宗旨的是 ( )

A．严复

B．王国维

C．梁启超

D．康有为

Embedded system is (66) special computer system which is scalable on both software and (67). It can satisfy the strict requirement of functionality, (68) , cost, volume, and power consumption of the particular application. With rapid development of (69) design and manufacture, CPUs became cheap. Lots of (70) electronics have embedded CPU and thus became embedded systems. For example, PDAs, cellphones, point-of-sale devices, VCRs, industrial robot control, or even your toasters can be embedded system.

A．cost-oriented

B．application-oriented

C．efficiency-oriented

D．consumption-oriented

精神活性物质又称为成瘾物质，能影响人类的（）

A.情绪

B.思维

C.行为

D.改变意识状态

E.提高智力

什么是得率？什么是生长得率？

显微观察发现，卵黄膜和透明带的间隙有两个极体，不能由此得出的结论是（）

A．已经受精

B．已经发生透明带反应

C．卵黄膜封闭应已经完成

D．没有受精