在儿童的学习策略训练中，使策略与动机激励相结合的最有效方法是( )A．使儿童能陈述
题型：单项选择题
问题：
在儿童的学习策略训练中，使策略与动机激励相结合的最有效方法是( )
A．使儿童能陈述策略学习的重要性
B．开展学习竞赛
C．使得儿童知道策略应用的适当条件
D．使得儿童亲身体验到应用策略可以提高学习效率
题型：单项选择题
The following data sufficiency problems consist of a question and two statements, labeled (1) and (2), in which certain data are given. You have to decide whether the data given in the statements are sufficient for answering the question. Using the data given in the statements plus your knowledge of mathematics and everyday facts (such as the number of days in July or the meaning of counterclockwise), you must indicate whether.
If 
is a positive integer, what is the value of r ？（）
(1) r＜70
(2) [*]
A. Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
B. Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
C. BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
D. EACH statement ALONE is sufficient.
E. Statements (1) and (2) TOGETHER are NOT sufficient.