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下列四个命题： ①两个相交平面有不在同一直线上的三个公交点 ②经过空间任意三点有且只有一个平面 ③过两平行直线有且只有一个平面 ④在空间两两相交的三条直线必共面 其中正确命题的序号是
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皮皮学刷刷变学霸
举一反三
【简答题】课本140页第3,7,10任选一题。
【单选题】Which of the following groups of people still differ in their views on diversity?
A.
Managers.
B.
Businessmen.
C.
Professors.
D.
Politicians.
【单选题】It was ________ that saw a lot of close matches in the 16 th Asian Games in November, 2010.
A.
Guangzhou
B.
located in Guangzhou
C.
in the city of Guangzhou
D.
held in Guangzhou
【单选题】In the 4th tip, the word 'key' is most probably close to the meaning of ______.
A.
answer
B.
secret
C.
importance
D.
satisfaction
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