6.过原点且倾斜角为150°的直线被圆所截得的弦长为 ( )
A. B.
C. D.2
5.已知a,b是相互不垂直的两条异面直线,下列命题中
①过a可做与b垂直的平面
②在a可做与b平行的平面
③过a,b外任一点可做与a,b都平行的平面
④存在平面α,β使aα,b
β,且α⊥β
其中真命题的个数为 ( )
A.0 B.1 C.2 D.3
4.已知向量a=(an,2),b=(an+1,),且a1=1,若数列
前n项和为S1,且a∥b,则
( )
A. B.
C.
D.
3.函数的反函数为 ( )
A.(
>0) B.
(
>0)
C.(
≠0) D.
(
≠0)
2.已知全集U=R,A=,
则(CuA)
B= ( )
A.(1,+∞) B.
C.(-∞,0)∪(1,+∞) D.(-∞,0)∪
1.复数= ( )
A.-1 B.1 C.-i D.i
10. if 改为whether。考查if和whether在表“是否”时用法的区别。if不能与or not连用。
全国卷1
We had guests last night who have not stayed 1. _______
in a B&B hotel ago. They did not want breakfast 2. _______
because that they were going out early in the 3. _______
morning. They came back lately and had some 4. _______
tea. I came into the living room and saw one of 5. _______
them just go through the kitchen door but turn 6. _______
on the light. He was looking for a glass the 7. _______
cupboard. He had no ideas that the kitchen was 8. _______
not for guests. I just smiled to me and thought, 9. _______
“What can I do? We are guests after all.” 10. ______
9. depend后添加on。 “depend on”为固定短语, 指依赖、 依靠。
8. examination system之前添加the。“examination system”此处特指下文中的“the only measure”。
7. destroying改为destroyed。考查动词语态,“much larger values”应被摧毁。
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