6.設(shè)函數(shù),對任意實數(shù)t都有成立,則函數(shù)值中,最小的一個不可能是
A.f(-1) B.f(1) C.f(2) D.f(5)
5.若則當(dāng)x>1時,a、b、c的大小關(guān)系是
A. B. C. D.
4.設(shè)二次函數(shù)的值為
A.正數(shù) B.負(fù)數(shù) C.正、負(fù)不定,與m有關(guān) D.正、負(fù)不定,與a有關(guān)
3.函數(shù)在區(qū)間上遞減,則實數(shù)a的取值范圍是
A.[-3,0] B. C. D.[-2,0]
2.設(shè)函數(shù)R)的最小值為m(a),當(dāng)m(a)有最大值時a的值為
A. B. C. D.
1.二次函數(shù)在區(qū)間[0,3]上有最小值-2,則實數(shù)a的值為
A.-2 B.4 C. D.2
4. He usually watches T V in the evening.(提問) _________________________________.
[我的收獲-我快樂]_________________________________________
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[我的不足-我改正] 你有做錯的題嗎?請你記錄下來并更正到錯題記錄本!
______________________________________________________________________
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3. She likes reading English stories.(改為否定句) _________________________________.
2. He went to Beijing once a year. (提問) _________________________________.
1. I always wash my clothes. (改為一般句) ________________________________.
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