档案保管工作的内容主要包括档案库房管理、档案流动过程中的保护和()。
A、档案消毒;
B、档案修裱;
C、保护档案的专门措施;
D、档案复制.
参考答案:C
根据首字母提示填空。
1. In old days there were several s_____ in the rich family.
2. Who is the l_____ of the army? I want to talk with him.
3. Three t_____ stole his bag yesterday.
4. U_____, he didn't pass the exam.
5. The wind is blowing heavily the whole day. What h_____ weather it is!
6. By the end of this c_____, we will have realized many dreams.
7. The men's leader went to a c_____ and said "S_____, open the door!"
8. As a writer you must i_____ a number of things in your story.
9. This c_____ king cut off his wife's head.
10. Please write out the story n_____.
受精的第3周时,卵黄囊和羊膜的外面、滋养层内面附有胚外中胚层。