3.如果是定義在R上的偶函數(shù),它在上是減函數(shù),那么下述式子中正確的是
A. B.
C. D.以上關(guān)系均不確定
2.函數(shù)的遞減區(qū)間為
A.(1,+) B.(-,] C.(,+) D.(-,]
1.若關(guān)于的不等式對任意恒成立,則實(shí)數(shù)的取值范圍是
A. B. C. D.
1 you how milk often do drink
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2 food to me good exercise and help better study
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3 tennis hardly they play can
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4. you she think has lifestyle do healthy a
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[我的收獲-我快樂]_________________________________________
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[我的不足-我改正] 你有做錯(cuò)的題嗎?請你記錄下來并更正到錯(cuò)題記錄本!
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4. He ___in the classroom at the moment.
A. maybe B. may be C. stay D. stayed
3. Pass me my glasses, Tom. I can ____see the picture.
A. hardly B. really C. rather D. almost
2. ____Laura is a little child, she knows a lot of knowledge.
A. Although B. But C. Because D. Almost
1. --Why not ____music club?
--I’m sorry. I can’t sing or dance.
A. to join B. join C. joining D. to join in
2. 大量的蔬菜幫助你保持健康。________________________________________.
[達(dá)標(biāo)測評]
1. 做眼保健操對你的眼睛有好處。______________________________________.
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