A:1:1:1
B:3:2:1
C:9:3:1
D:6:3:2
给划线字注音:
____
又何间焉
望其旗靡
小惠未徧
We are going to play a basketball game _________ Class One this Sunday.
读图,回答:
①若直线a,b异面,b,c异面,则a,c异面;
②若直线a,b相交,b,c相交,则a,c相交;
③若a∥b,则a,b与c所成的角相等;
④若a⊥b,b⊥c,则a∥c.
其中真命题的个数为( )