A:红色
B:灰色
C:黄色
D:蓝色
①m是无理数;
②m是方程m2﹣12=0的解;
③m满足不等式组 {m−4>0m−5<0 ;
④m是12的算术平方根.
读下图“黑龙江省人口出生率、死亡率比较图(单位:‰)”,黑龙江省的人口自然增长率最小的年份是( )
Today is Monday. Linda is at school. She has Chinese,English and PE in the morning. She doesn't have Music today. She has Maths and Art in the afternoon. She has Music on Fridays.