A:细胞核内呈现红色,细胞质内呈现绿色
B:细胞核内呈现绿色,细胞质内呈现红色
C:细胞核和细胞质都呈现绿色
D:细胞核和细胞质都呈现红色
完形填空
Look! There 1many kites in the2.They are red,yellow and blue.I like 3kites 4 much.But I can't fly very5.My brother Peter can do6 well.He often 7me fly kites.We go out8our kites every Sunday.9my brother's help,now I can fly10.
太阳能属于____ (填“可”或“不可”)再生能源.红外线____ (填“属于”或“不属于”)电磁波,电磁波在真空中的传播速度是____ km/s.