—Why is John good at History?
—Because he has a good ______ .He always remembers things quickly.
A:sight
B:pronunciation
C:memory
已知条件p:-1≤x≤10,q:x2-4x+4-m2≤0(m>0)不变,若 ¬p是 ¬q的必要而不充分条件,如何求实数m的取值范围?
下列关于染色体,DNA,基因三者关系的叙述中不正确的是( )
根据汉语意思完成句子