根据图片内容，填入适当介词

1. I like running _____ the mormng.

2. There is an orange _____ the desk.

3. We will meet _____ eighto'clock.

4. An eraser is _____ the pencil case.

5. Sometimes I can't sleep _____ night.

6. Tom is _____ his bike.

医用脱脂棉和医用脱脂纱布属于（）

A．第一类医疗器械产品

B．第二类医疗器械产品

C．第三类医疗器械产品

D．第四类医疗器械产品

E．第五类医疗器械产品