Sightseeing in this city is best done _______ by tour bus _______ by bicycles, you must choose one.
A：neither, or
B：either, or
C：both, and
D：neither, nor
为营造尊师爱师的气氛，八年级（3）班的同学们准备召开一次“老师，您辛苦了”的主题班会，请为本次班会搜集一条尊师格言或标语,张贴在教室内。
下列关于植物细胞有丝分裂过程的叙述不正确的是（ ）
