问题补充：
Singapore is not just a clean and tidy city in the world, its also the greenest. There are (A) 三个原因why it is so.
Say No to waste
Singaporeans do not waste a single drop of water. They recycle water and save( B ) almost all rainfall. The water can be used for industry （工业） and even drinking.
Many green buildings
The Duke-NUS Graduate Medical School is one of the great examples of (C) pretty green design. It uses sustain-able design elements (可持续发展的设计元素) in its school building. ( D ) Singapore has many green buildings like this.
Get them while they e young
The Green Singapore 2050 (GS2050) is a community platform (社区平台) for young people to express their great worries about environmental problems, and think of solutions for(E) them. Why 2050？Its because these young people will be the ones to run the country in 2050, and hopefully they will solve the worlds problems.
【小题1】将文中划线部分(A)译成英语。
【小题2】写出文中划线部分(B)和(C)的同义词或近义词。
【小题3】将文中划线部分(D)改写为There many green buildings like this Singapore.
【小题4】文中划线部分(E)指代的是：
【小题5】从文中找出能说明本文主旨大意的中心词。Three reasons
答案：
(答案→)Three reasons
解析：本文主要介绍的是新加坡的城市特点。
【小题1】注意reason是可数名词。
【小题2】根据所学可知almost=nearly，几乎，差不多；pretty=beautiful，漂亮的。
【小题3】There be句型表示“某地(或某时)存在有某人(或某物)，而并非某地(某人、某物或某时)拥有什么东西”，句中有若干个名词作主语，动词be常与后面主语中的第一个名词在数上一致。根据many green buildings可知填：are, in
【小题4】联系前一句to express their great worries about environmental problems 描述，可知此处指的是环境问题。故填：(environmental) problems
【小题5】根据Singapore is not just a clean and tidy city in the world, 及下文描述，可知本文主要介绍的是新加坡的城市特点。故填：Singapore，新加坡。
