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1·What does the writer do with the cigarette butts?

作者是如何处理烟蒂的？

2·Their Starbucks cup filled with water and cigarette butts has spilled and gotten nicotine brown water on the slate in the front of the church steps.

星巴克杯子里装满的水和烟蒂洒了出来，褐色的尼古丁水洒在教堂台阶前的石板上。

3·I've already seen two cigarette butts.

我已经看见两烟头了。

4·White pollution source is cigarette butts.

白色污染的源头是烟头。

5·Please don't litter cigarette butts to the alley!

请勿丢烟蒂到楼下防火巷！

6·So people who smoke also had to throw away cigarette butts.

所以抽烟的人也只好扔掉烟头。

7·Please do not throw cigarette butts, do not smoke in the bed.

请您不要乱扔烟头，不躺在床上吸烟。

8·Objective To study the DNA extraction and its typing in cigarette butts.

目的研究烟蒂中dna提取及其检验。

9·Cleaning up your cigarette butts and plastic bags would improve the environment.

收拾好你的烟头和塑料袋将会改善环境。

10·In other cases, fires were also caused by stoves, candles, cigarette butts, etc.

其他情况，如火炉，蜡烛，烟头等也会引起火灾。