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【单选题】
在PS中将前景色和背景色恢复为默认颜色的快捷键是
A.
D
B.
X
C.
Tab
D.
Alt
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参考答案：
举一反三
【单选题】听力原文：W: Hello. Officer Jones speaking. M: Well, I'd like to report a UFO sighting. W: A what? M: A UFO! When I was driving hone from a party three hours ago at 6:30, I saw this bright light overhead. ...
A.
6:30 P.M.
B.
3:30 P.M.
C.
9:30 P.M.
D.
7:00 P.M.
查看完整题目与答案
【单选题】--- ________ you ________ to live in Qiandao Lake? --- Yes , I did.  But in 2005, I came to Hangzhou with my family.
A.
Did, used
B.
Were, use
C.
Do, use
D.
Did, use
查看完整题目与答案
【简答题】I came to live here where I am now between Wounded Knee Greek and Grass Greek。Others came too, and we made these little grey houses of logs that you see, and they are square. It is a bad way to live, ...
查看完整题目与答案
【单选题】设 A = { 1,2,3,4 } , A 上二元关系 R 定义为: R ={( 1,2) ,( 2,1) ,( 2,3) ,( 3,4) }. R 的传递闭包T(R)=R ∪B. B=
A.
{(1,1),(2,2),(3,3),(4,4)}
B.
{(3,2),(4,3)}
C.
{(1,1),(2,2),(3,3),(4,4),(3.2),(4,3)}
D.
{(1,1),(1,3),(1,4),(2,2),(2,4)}
查看完整题目与答案
【单选题】设A={1,2,3}，A上二元关系R＝{〈1,2〉，〈2,1〉,〈2,3〉},则R具有的性质是
A.
自反性
B.
对称性
C.
传递性
D.
反自反性
查看完整题目与答案
【单选题】If the UFO came, I would ____the police.
A.
call out
B.
speak out
C.
call up
D.
speak up
查看完整题目与答案
【单选题】Could I do some explanations? I ________ to call on you yesterday, but someone came to see me just when I was about to leave. [     ]
A.
had intended
B.
intended
C.
would intend
D.
was intending
查看完整题目与答案
【单选题】设 A = { 1,2,3,4 } , A 上二元关系 R 定义为: R ={( 1,2) ,( 2,1) ,( 2,3) ,( 3,4) }. R 的对称闭包T(R)=R ∪B. B=
A.
{(1,1),(2,2),(3,3),(4,4)}
B.
{(3,2),(4,3)}
C.
{(1,1),(2,2),(3,3),(4,4),(3.2),(4,3)}
D.
{(1,1),(1,3),(1,4),(2,2),(2,4)}
查看完整题目与答案
【判断题】理答的主要作用是不断激发和提升学生的思考。
A.
正确
B.
错误
查看完整题目与答案
【单选题】— You look scared. What happened? — Well , I _______ along the street ________ the UFO landed.
A.
was walking ; while
B.
is walking ; when
C.
was walking ; when
D.
is walking ; while
查看完整题目与答案
相关题目：
【单选题】听力原文：W: Hello. Officer Jones speaking. M: Well, I'd like to report a UFO sighting. W: A what? M: A UFO! When I was driving hone from a party three hours ago at 6:30, I saw this bright light overhead. ...
A.
6:30 P.M.
B.
3:30 P.M.
C.
9:30 P.M.
D.
7:00 P.M.
查看完整题目与答案
【单选题】--- ________ you ________ to live in Qiandao Lake? --- Yes , I did.  But in 2005, I came to Hangzhou with my family.
A.
Did, used
B.
Were, use
C.
Do, use
D.
Did, use
查看完整题目与答案
【简答题】I came to live here where I am now between Wounded Knee Greek and Grass Greek。Others came too, and we made these little grey houses of logs that you see, and they are square. It is a bad way to live, ...
查看完整题目与答案
【单选题】设 A = { 1,2,3,4 } , A 上二元关系 R 定义为: R ={( 1,2) ,( 2,1) ,( 2,3) ,( 3,4) }. R 的传递闭包T(R)=R ∪B. B=
A.
{(1,1),(2,2),(3,3),(4,4)}
B.
{(3,2),(4,3)}
C.
{(1,1),(2,2),(3,3),(4,4),(3.2),(4,3)}
D.
{(1,1),(1,3),(1,4),(2,2),(2,4)}
查看完整题目与答案
【单选题】设A={1,2,3}，A上二元关系R＝{〈1,2〉，〈2,1〉,〈2,3〉},则R具有的性质是
A.
自反性
B.
对称性
C.
传递性
D.
反自反性
查看完整题目与答案
【单选题】If the UFO came, I would ____the police.
A.
call out
B.
speak out
C.
call up
D.
speak up
查看完整题目与答案
【单选题】Could I do some explanations? I ________ to call on you yesterday, but someone came to see me just when I was about to leave. [     ]
A.
had intended
B.
intended
C.
would intend
D.
was intending
查看完整题目与答案
【单选题】设 A = { 1,2,3,4 } , A 上二元关系 R 定义为: R ={( 1,2) ,( 2,1) ,( 2,3) ,( 3,4) }. R 的对称闭包T(R)=R ∪B. B=
A.
{(1,1),(2,2),(3,3),(4,4)}
B.
{(3,2),(4,3)}
C.
{(1,1),(2,2),(3,3),(4,4),(3.2),(4,3)}
D.
{(1,1),(1,3),(1,4),(2,2),(2,4)}
查看完整题目与答案
【判断题】理答的主要作用是不断激发和提升学生的思考。
A.
正确
B.
错误
查看完整题目与答案
【单选题】— You look scared. What happened? — Well , I _______ along the street ________ the UFO landed.
A.
was walking ; while
B.
is walking ; when
C.
was walking ; when
D.
is walking ; while
查看完整题目与答案
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