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【单选题】
儿童的心理发展存在关键期，这说明了儿童心理发展具有（ ）A.
连续性和阶段性
B.
不平衡性
C.
个别差异性
D.
定向性和顺序性
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举一反三
【简答题】水平线的H面投影反映直线的实长及对V面和 面的倾角。
【单选题】Though he ______ well prepared before the job interview, he failed to answer some important questions.
A.
will be
B.
would be
C.
has been
D.
had been
【单选题】How much did the young man know about cars?
A.
He knew little about foreign cars.
B.
He knew even less than George.
C.
He had just learned something from his girlfriend.
【简答题】He knew the problem wasserious and promised to look into it _____ he reached office. A. atthat moment B. for that moment C.immediately D. soon
【简答题】水平线的 ____ 面投影反映直线的实长,正平线的 ____ 面投影反映直线的实长,侧平线的 ____ 面投影反映直线的实长。(选填 V 或H或 W )
【简答题】Although he knew little about large amount of work done in the field ,he succeeded where more well-informed experimenters failed. A ． a the B ． the a ...
【简答题】水平线的 H 投影反映直线的实长及对 _____ 、 投影面的倾角
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