用下列四台显微镜观察洋葱表皮细胞，视野中细胞数目最多的是[ ]

A．目镜5×；物镜8×     

B．目镜10×；物镜40×   

C．目镜15×；物镜10×   

D．目镜20×；物镜45×     

用括号中词的适当形式填空

小题1:Turn left at the        (three) turning.

小题2:We often visit the old people and do some           (wash) for them.

小题3:He often tells us       (fun) stories and makes us laugh.

小题4:Our English teacher         (look) so beautiful in her new dress.

小题5:Look! Your mother             (chat) with her friends on the phone.