操作空间效率的提高可归因于()与()两方面的因素。
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形式运算阶段的儿童具备了以下思维能力:假设演绎思维、()思维和()思维。
Great Gatsby, written by Fitzgerald in 1925, is a story about ______ who was destroyed by the influence of the wealthy, pleasure-seeking people around him.
A. a vagabond
B. an idealist
C. an eccentric
D. an opportunist
Which of the following statements about The Scarlet Letter is NOT true?
A. It explores man's never-ending search for the satisfaction of materialistic desires.
B. It relates the conflicts between the society and the individual.
C. It is about the effect of sin on the people involved and the society as a whole.
D. It presents a p
Which of the following is not written by Robert Frost?
A. To Autumn
B. Stopping by Woods on a Snowy Evening
C. Mending Wall
D. A Boy's Will