There are lots of ______ of art in the museum.
A:work
B:works
C:job
D:jobs
某高等雄性动物,假定某一个体的三对等位基因,分别位于三对同源染色体上,该个体的细胞经过减数分裂以后,其可能形成的精子类型和可能生成的卵子类型有( )
______ it's summer ______ winter, Mount Huang is well worth visiting.