人类是唯一宿主的细菌为()
A.链球菌
B.淋病奈瑟菌
C.肺炎链球菌
D.脑膜炎奈瑟菌
E.乙脑病毒
参考答案:B
解析:人类是淋病奈瑟菌唯一的天然宿主和传染源。
为加强对未成年人健康成长的保护,我国《未成年人保护法》规定:禁止用工单位非法招用 的未成年人。 [ ]
A、已满18 周岁
B、已满16 周岁
C、未满16 周岁
D、未满14 周岁
按要求改写句子。
1. Please write down your name here. (改为否定句)
Please ____ write down your name here.
2. I swept the floor just now. (改为一般疑问句)
____ you ____ the floor just now?
3. She needs to wear her school uniform. (改为否定句)
She ____ ____ to wear her school uniform.
4. I often help my mum do the laundry on Sundays. (改为同义句)
I often help my mum ____ ____ on Sundays.
5. The boy is cleaning the table. (对画线部分提问)
____ ____ the boy ____ ?