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【单选题】已知定义在R上的函数y=f(x)满足下列条件: ①对任意的x∈R都有f(x+2)=f(x); ②若0≤x 1 <x 2 ≤1,都有f(x 1 )>f(x 2 ); ③y=f(x+1)是偶函数, 则下列不等式中正确的是(  )
A.
f(7.8)<f(5.5)<f(-2)
B.
f(5.5)<f(7.8)<f(-2)
C.
f(-2)<f(5.5)<f(7.8)
D.
f(5.5)<f(-2)<f(7.8)
【简答题】下列说法: ①若 (其中 )是偶函数, 则实数 ; ② 是奇函数又是偶函数; ③已知 是定义在 上的奇函数,若当 时, , 则当 时, ; ④已知 是定义在R上的不恒为零的函数, 且对任意的 都 满足 , 则 是奇函数. 其中所有正确说法的序号是 __ .
【简答题】下列说法:①若 (其中 )是偶函数, 则实数 ; ② 既是奇函数又是偶函数; ③已知 是定义在 上的奇函数,若当 时, ,则当 时, ; ④已知 是定义在R上的不恒为零的函数, 且对任意的 都满足 , 则 是奇函数. 其中所有正确说法的序号是 ▲
【简答题】Quand mon père est rentré, ma mère (préparer déjà)___________ le dîner.
【简答题】Quand ma mère _________(finir) de faire la vaisselle,elle _____(prendre) toujours une tasse de thé.
【简答题】已知函数f(x)对任意的x,y∈R,都有f(x)+f(y)=f(x+y). (1)求f(0)的值; (2)判断f(x)的奇偶性; (3)若f(1)=1,且f(x)在[0,+∞)上是增函数,求满足不等式f(2 x -x)+f(x)>4的x的取值范围.
【单选题】Quand j’étais petit, je ______ chaque été chez ma grand-mère.
A.
suis allé
B.
irais
C.
allais
D.
allai
【简答题】汽车蓄电池在放电过程中,蓄电池的()能转变成()能,在充电过程中,()能被转变成()能:
【单选题】请选择合适的词语填空: Tenant à rester incognito, il se mêle ______ la foule. Je déteste quand ma mère se mêle ________ ma vie sentimentale Depuis que l'inspecteur s' ________ mêle, l'affaire n'avance plus.
A.
à, de, y
B.
de, à, y
C.
à, de, en
D.
de, à, en
【简答题】下列说法:①若 (其中x∈[2a-1,a+4])是偶函数,则实数b=2; ② 既是奇函数又是偶函数; ③已知 是定义在R上的奇函数,若当x∈[0,+∞)时, ;则当x∈R时, ; ④已知 是定义在R上的不恒为零的函数,且对任意的x,y∈R都满足 ,则 是奇函数。 其中所有正确命题的序号是(    )。
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