掌握学习理论是对哪些变量进行分析（ ）
A. 毅力
B. 教学质量
C. 能力
D. 情感准备状态
对拉斯维尔传播模式的评价，下面正确的有（ ）
A. 该模式将传播视为劝服性过程，认为传播是传播者打算影响接受者，并且总能取得一定效果
B. 这个模式忽略了反馈
C. 这个模式忽略了传播过程中外部环境的影响
D. 传播划分为5个部分，忽略了传播行为的复杂性，同时将研究领域划分为5个部分，忽略了相互之间的关联
Of all the four candidates, he is the _______ likely to win.
A. less
B. least
C. little
D. last
After they improved the production process, there were only _______ as before.
A. one-eighth as many defective products
B. as one-eighth many defective products
C. as many one-eighth defective products
D. defective products as one-eighth many
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