用in, on, under, behind 填空。

     I have a nice and clean room. There is a small desk __1__ the room. My clock is __2__ the desk.

The soccer is __3__ the bed. My backpack is __4__ the door of the room. My pen and eraser are not

__5__ the pencil-box. The pencil-box is not __6__ the backpack. It's __7__ the clock.

患者男，30岁，因发热、腹痛、腹泻、里急后重就诊。粪常规：脓血、黏液便，见有大量白细胞。

关于该细菌的生物学特征，正确的是（）。

A.氧化酶阳性

B.O/129不敏感

C.不发酵葡萄糖

D.硝酸盐还原试验（＋）

E.不分解乳糖

F.动力（＋）

G.42℃能生长