∵(-4)2=4,4的平方根是±4=±2,
∴(-4)2的平方根是±2.
故选D.
晕动病时()。
A.病人自觉心跳或心悸
B.急性便秘伴呕吐、肠绞痛
C.先发热后有意识障碍
D.先有意识障碍后有发热
E.眩晕伴耳鸣与听力减退
[A] eyes[B] hat[C]clothes[D]nose[E] ears[F] mouth[G] shoes
You see people and things with them.