下列哪项能稳定遗传[ ]
A．F1性状表现一致的个体
B．测交后代所有个体
C．表现显性性状的个体
D．表现隐性性状的个体
答案：D
What does Miss White do? [ ]
A. She likes English.
B. She's a teacher.
C. At a school.
航空、铁路如何计算体积重量？
