I don't really r like the write, I have to say his books are very exciting.
A:although
B:unless
C:until
D:as if
连词成句
小红同学在用显微镜观察洋葱鳞片表皮细胞,显微镜的目镜有5×和10×两种,物镜有10×和40×两种,下列组合中观察到细胞数目最少的是( )