gaokao 2015 Q1

gaokao · China · shaanxi-science Probability Definitions Set Operations
1. Let $M = \left\{ x \mid x ^ { 2 } = x \right\} , N = \{ x \mid \lg x \leq 0 \}$, then $M \bigcup N =$
A. $[ 0,1 ]$
B. $( 0,1 ]$
C. $[ 0,1 )$
D. $( - \infty , 1 ]$
1. Let $M = \left\{ x \mid x ^ { 2 } = x \right\} , N = \{ x \mid \lg x \leq 0 \}$, then $M \bigcup N =$\\
A. $[ 0,1 ]$\\
B. $( 0,1 ]$\\
C. $[ 0,1 )$\\
D. $( - \infty , 1 ]$