下列关于收入要素的表述中，正确的有（）。

A．收入在经济利益很可能流入时即可以确认

B．收入应当是企业在日常活动中形成的

C．收入应当会导致经济利益的流入

D．收入应当最终会导致所有者权益的增加

用括号内所给单词的适当形式填空。

1. We all know that France is a _______ (Europe) country.

2. "Excuse me, can I take this seat?" he said to the young woman _______. (polite)

3. At _______ (one) I didn't like him, but now I do.

4. The young man fell _______ (sleep) as soon as he lay down.

 5. There are a lot of _______ (mouse) in the old house.