根据句意及首字母提示填词。

1. —W____ are you from?

    —I’m from Shanghai.

2. —What’s y____ name?

    —My name is David.

3. —Are you f____ Fuzhou?

    —No, we aren’t.

4. —What’s your telephone n____?

    —It’s (010)8659-7981.

5. —E____ me, are you Frank?

    —Yes, I am.

马克思主义伦理思想产生的社会历史条件有哪些？