引起反应性低血糖最常见的原因是（） A.2型糖尿病早期 B.果糖不耐受症 C.特发性

PCI(Peripheral Component Interconnect)局部总线是受计算机厂商广泛支持的局部总线标准，最先由( )公司提出。

A．IBM

B．Microsoft

C．Intel

D．AMD

-Could you give me an explanation ______ your keeping silent throughout the discussion?    

-Oh, terribly sorry. I had the least idea of what ________. I would have made a complete fool

  ofmyself if I had said anything.     [ ]

A. for; was discussed  

B. of; had discussed  

C. to; was being discussed  

D. with; had been discussed

在关系模型中，把数据看成一个二维表，每一个二维表称为一个【 】。

有一篮子橘子，篮子与橘子的重量比是1：15，卖出橘子的1/5正好是6斤，原来连橘子带篮子共重多少公斤（）

A．32

B．12

C．16

D．24

简述目标设定的SMART原则。