痰液标本的采集，正确是（）。

A.采前先漱口

B.清晨第一口

C.深部咳出的痰

D.细菌培养盛于无菌容器

E.抗酸杆菌需留1小时的痰

根据首字母，写出下列单词。

1. You should take off your shoes when you e______ someone's home in Japan.

2. John makes a lot of m______ from his computer games.

3. Please give my best w______ to your parents.

4. I'm glad that you are always r______ to help others. I'm proud of you.

5. The Beijing roast duck s______ nice and tastes nice, too.