A:张骞
B:郑和
C:戚继光
D:郑成功
一粒种子能长成参天大树,是与细胞的____ 、____ 和____ 有主要关系.
阅读对话,判断句子理解的正误。
Xiao Qiang: Where is the school, John and Lucy?
John: Sorry! I don't know.
Lucy: There it is.
Xiao Qiang: Thanks. See you later.
John and Lucy: Goodbye.