向无规定动物疫病区运输相关易感动物、动物产品，（），即分别由输出地动物卫生监督机构和输入地省级动物卫生监督机构检疫合格后，方可进入无规定动物疫病区

A.需经过两次检疫

B.需经过三次检疫

C.需经过多次检疫

D.需经过必要检疫

E.需经过一定检疫

根据句意及首字母提示完成单词。

l. Tom is a s _____ man. He always wears a hat all the year round.

2. The  plane t _____ off from Hong Kong at 21:00 last night.

3. My mother b _____ me a new computer yesterday.

4. To my s _____, the alien was shopping.

5. The boy was walking down the street when the UFO l _____.