选择题：对于共阴极数码管显示器，为使得数码管不显示任何内容，应在段码线上输入 。A、FFHB、80HC、

4、 (( ))of these two products is more successful?[ 2 分 ]

（ ）指对一个或一组被试实施干预，然后测量其产生的变化，来确定实验的效果。A、轮组设计B、固定组设计C、等组设计D、单组设计

2、 2. C: So, why did you (( )) their offer, then? D: Well, the schedule was abs

9. If you carry a full glass of water carelessly, you will ________some of the w

25. _______good, the food was soon sold out. ( )(本题3.0分)A、 TastedB、 Being tasted