问题 问答题 简答题

厌氧型生物反应器填埋场特点有哪些?

答案

参考答案:

加速填埋垃圾稳定,增大填埋场有效容积,提前复用填埋场地;增大甲烷产量和产气速率,回收利用气体更具经济优势;减小渗滤液处理量和处理难度,降低处理费用;缩短填埋场封场后的维护监管期,减小填埋场渗滤液处理、地下水监测等维护费用;渗滤液中氨氮含量较高;后期渗滤液有机污染物浓度下降很慢。

选择题
写作题

读写任务

阅读下面的短文, 然后按照要求写一篇150词左右的英语短文。

   Nowadays more and more young people are going to study abroad.Like everything else,

studying abroad has both favorable and unfavorable aspects.Generally, the favorable aspects

can be listed as follows.

      Firstly, they think by attending a college in a foreign country they can learn not only useful

knowledge, but also the culture and customs of other nations.Secondly, they can take

advantage of this opportunity to gain a good command of the foreign language they are

learning very quickly.Moreover, they can meet different people and experience different

cultures, which may help to broaden their views.

    Every coin has two sides.The negative aspects are also apparent.The costs are much higher

than those in their native country.Most overseas students have to work for a living, which

can’t allow them to pay all their attention to study.What’s more, they may feel very

lonely.

     Through above analysis, we can see that the positive aspects outweigh the negative ones.

     Therefore, I am in favor of going abroad to study.

【写作内容】

1. 以约30个词概括短文的内容要点;

2. 近几年来, 出国学生的数量不断增加, 而且呈现年龄越来越小的趋势。人们对此看

法不同。请你以“Studying Abroad”为题, 使用大约120个词谈谈自己对此事的看法。

【写作要求】

你可以使用实例或其他论述方法支持你的论点, 也可以参照阅读材料的内容, 但不要抄

袭阅读材料中的句子。

【评分标准】

概括准确, 语言规范, 内容合适, 篇章连贯。

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