A:x≤3
B:x=4
C:x<3且x≠4
D:x≤3且x≠4
O____, he told a lie to the coach and his teammates.
下列关于碱基互补配对含义的叙述中,不正确的是( )
同学们,如果你是赵冰,你会怎样和妈妈说呢?
读青藏地区图,回答下列问题.