问题 填空题

长期以来,实心粘土砖一直是我国主要的建筑材料.由于粘土砖在生产过程中存在着诸多弊端,国家有关部门提出了减少粘土砖使用率、倡导新型材料的要求.如图所示的空心水泥砖就是新型建筑材料的一种.请你从节能与环保等方面分析,使用空心水泥砖比使用实心粘土砖有哪些好处.〔至少写出三条)

答案

答:①使用空心水泥砖,减少了水泥与沙石量,可以有效节约资源;

②用空心水泥砖垒墙,由于墙体内的空气为热的不良导体,使这种房子冬暖夏凉,从而节约能源;

③有隔音作用;

④不挖粘土,不破坏环境;

⑤拆解时可少产生一定的建筑垃圾,也是减少对环境的破坏.

写作题

书面表达。

     请你阅读你的加拿大网友Tommy的e-mail,根据e-mail的内容,给他写一封回信。

     注意:1. 字数不少于60。

               2. 所给的开头句和结尾不必抄写在答题纸上。

Dear Li Lei,

     I haven't heard from you for a long time. I'm glad to tell you that I'll visit Beijing this summer vacation.

It is said that Beijing is a great city with a long history and more changes have taken place since the 2008

0lympic Games. I would like to know something about Beijing, such as places of interest, the environment,

traffic and people there.

     I'm looking forward to hearing from you soon.

                                                                                                                                      Yours,

                                                                                                                                    Tommy

Dear Tommy,

      I'm glad to know you will come to Beijing. ________________________________________________

_______________________________________________________________________________________

_______________________________________________________________________________________

                                                                                                                                            Yours,

                                                                                                                                             LiLei

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