8.已知數(shù)列{log(a-1)}(n∈N*)為等差數(shù)列,且a=3,a=5,則
|
A. B. C.1- D.1-
7.若奇函數(shù)f(x)(x∈R)滿足f(2)=1,f(x+2)=f(x)+f(2),則f(1)等于
A.0 B.1 C.- D.
6.三人傳球,由甲開(kāi)始發(fā)球,并作為第一次傳球,經(jīng)過(guò)5次傳球后,球仍回到甲手中,則不同的傳球方式共有
A.6種 B.8種 C.10種 D.16種
5.設(shè)處均有極值,則下列點(diǎn)中一定在x軸上的
A.(a,b) B.(a,c) C.(b,c) D.(a+b,c)
4.設(shè)平面a∩平面β=l,點(diǎn)A、B∈平面α,點(diǎn)C∈平面β,且A、B、C均不在直線l上,給出四個(gè)命題:
① ②
③ ④
其中正確的命題是
A.①與② B.②與③ C.①與③ D.②與④
3.已知sinα+cosα=,且tanα>1,則cosα的值為
A. B. C. D.
2.設(shè)命題p:x<-1或x>1;命題q:x<-2或x>1,則是的
A.充分不必要條件 B.必要不充分條件 C.充要條件 D.既不充分也不必要條件
1.已知集合M={-1,1,2},N={y|y=x2,x∈M},則M∩N是
A.{1,2,4} B.{1,4} C.{1} D.
10. ① It was eleven o’clock _____ they went out of the cinema.
、 It was at eleven o’clock _____ they went out of the cinema.
A. which B. that C. when D. on which
9. ① Is this museum _____ they visited last month?
② The teacher tells us that _____ cleans the blackboard is to be praised.
A. that B. the one C. which D. the one who
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