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【单选题】
函数 在什么数集上是减函数A.
[0,+∞)
B.
(-∞,0]
C.
R
D.
(-∞,0) (0,+∞)
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反馈参考答案：
举一反三
【单选题】Generally, a lantern riddle______ of three parts, namely the riddle, the hint and the answer.
A.
consists
B.
desists
C.
insists
D.
resists
【单选题】Which of the following aspects is not the source of a classic lantern riddle in ancient times? _______
A.
Chinese characters
B.
idioms
C.
knowledge of astronomy and geography
D.
sports
【判断题】On Lantern Festival, people usually watch lanterns and fireworks, guess lantern riddles, perform folk dances, and eat yuanxiao.
A.
正确
B.
错误
【简答题】Can you guess the answer _______.this riddle(迷语)?
【简答题】guess lantern riddles
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