【2014下】按照皮亚杰的观点，2-7岁儿童的思维处于（   ） A.
具体运算阶段 B.
形式运算阶段 C.
感知运算阶段 D.
前运算阶段

单项选择题I Choose the right answer from the following choices. (1-15题，每题2分，共30分) 1. In the economic recession, employers____________ the reduction of costs, mostly particularly in wages, in order to survive in the competitive world markets. A、saddled with B、make allowances for C、resorted to

单项选择题下列选项中属于位图选项的是（）A、BlurB、CheckerC、GlossinessD、Bitmap