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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

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2.函數(shù)的遞減區(qū)間為 

A.(1,+)    B.(-,]   C.(,+)   D.(-,

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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.

試題詳情

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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試題詳情

4. He ___in the classroom at the moment.

A. maybe    B. may be  C. stay  D. stayed

試題詳情

3. Pass me my glasses, Tom. I can ____see the picture.

A. hardly    B. really  C. rather   D. almost

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2. ____Laura is a little child, she knows a lot of knowledge.

A. Although   B. But   C. Because  D. Almost

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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

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2. 大量的蔬菜幫助你保持健康。________________________________________.

 [達(dá)標(biāo)測評]  

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1. 做眼保健操對你的眼睛有好處。______________________________________.

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