Contamination of water supplies is usually
due to poor sanitation close to water
sources, sewage disposal into the sources
themselves, leakage of sewage into distribution
systems or contamination with...
| English Article | Word Count | Duration | Accuracy | Speed | Backspace | Error | Slogan |
|---|---|---|---|---|---|---|---|
| 《NCE4L38 Water and the traveller新概念4-38水和旅行者》 | 2143字 | 2.0分钟 | 99% | 69 CPM | 6 次 | 1 | 不及格，加强练习！ |
| The wrong word this time: g | |||||||
| Inspirational quotes: 少壮轻年月，迟暮惜光辉。 ——何逊 | |||||||
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