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【判断题】
数学模型是计量经济学模型的一种。A.
正确
B.
错误
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举一反三
【简答题】读一读，判断正(√)误(×)。 Christmas is a happy holiday for children, because Santa Claus brings them gifts. Small children believe (相信) that on Christmas Eve, Santa Claus will come down their chimney (烟囟) to br...
【单选题】The young man is a bit _____ . He always wears a red hat.
A.
odd
B.
herald
C.
creep
D.
valid
【简答题】读短文完成句子。 Hi! Friends. This is a photo of my family. Look at this man. He is my father. He wears a black sweater. He likes black very much. That man is my uncle. He likes white. These girls are my sist...
【判断题】Uncle Sam is a figure symbolizing the United States, and he’s portrayed as a tall, white-haired man with a goatee and he’s often dressed in red, white, and blue, and wears a top hat. ______
A.
正确
B.
错误
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