题目
(10分) 先化简,再求值:,其中. 答案:当时,原式解析:解:原式··········································· 2分··························································· 4分············································································看图,选择正确的句子
(1)
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A.这是中央广播电视塔。
B.这是北海(h3i)公园的白塔。
(2)
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A.弟弟背着书包上学去。
B.放学了,弟弟背着书包回家去。
(3)
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A.这是一群(q*n)大白鹅。
B.这是一群大白鸭。
(4)
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A.这(zh8)是一只(zh9)白鹅。
B.这是一只鸭子。
(5)
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A.弟弟拿(n2)着书(sh&)包上学去。
B.弟弟背着书包上学去。