The implications of disinfection by-products (DBPs) present in drinking water are of public health concern because of their potential mutagenic, carcinogenic and other toxic effects on humans.张老师:我看文献看到这么一句话,我的理解它大体意思说:我们的日常饮用水都...
...nglish for 3 years;到现在,他已经在武汉住了5年,He has lived in wuhan for 5 years"。二,用于某一动作从过去到现在一直反复发生。如:“他一向都是骑车上班,He has always gone to work by bike;他老是放学后看电视,He has always watch TV after ...
To achieve the best effect,interactive forms ,such as presentations and live shows will be adopted.To enjoy these benefits,here are some tips.以上两句话都来自于大考的作文范文,两句话的不定式逻辑主语和句子的主语不一样呢,这个要怎么理解?谢谢