非处理因素应尽量保持一致，符合（）
A．对照的原则
B．重复的原则
C．随机化原则
D．节约化原则
E．最优化原则
参考答案：C
My son __________ his English composition last night, now he is continuing it.[ ]
A. wrote
B. was writing
C. had written
D. has written
对学生看待事物的基本看法与倾向的要求属于（）
A、知识与技能目标
B、过程与方法目标
C、情感态度价值观目标
D、活动目标
