The little hero could be seen with his legs __ around the truck and his blond head __ out above the branches.

A．wrapped, sticking

B．wrapping, sticking

C．wrapped, sticked

D．wrapping, sticked

用显微镜观察洋葱表皮细胞时，由低倍镜转换成高倍镜后发现[ ]

A．视野变暗，细胞数目减少

B．视野变亮，细胞数目减少

C．视野变暗，细胞数目增多

D．视野变暗，细胞数目增多