Question

18．With limited space for parks and gardens，architects and city planners often find it challenging to include greenery in neighborhoods in cities．One creative solution is to grow plants on unused areas like walls and rooftops．It's a popular idea，and now rooftop gardens and green walls have been sprouting up（大量冒出）in cities around the world．
There are many benefits of having green spaces to the urban landscape．Adding gardens to rooftops or walls can create a pleasant environment--what was once a gray cement（水泥）wall can become a colorful，blooming garden．The CaxiaForum art gallery in Madrid，Spain，is a famous example--one of its walls is covered with 15，000 plants from over 250 different species．In other cities，green walls are being used more functionally，to cover up construction sites and empty buildings and to decorate the lobbies of office buildings．
Using plants to cover walls and rooftops can also keep cities cooler in the summer．Buildings and roads absorb the sun's heat and hold it，causing a building or neighborhood to stay warmer longer．Plants，on the other hand，provide an enormous amount of shade．There is evidence that growing a roof or wall garden can lower a building's energy costs．
In New York City，public schools plant rooftop gardens that can reduce heating and cooling costs．In addition to saving the school money，teachers and parents love the gardens because of their educational value--it's a fun and healthy way for their kids to investigate the world around them．"For the children，it's exciting when you grow something edible（可食用的），"said Lauren Fontana，principal of a New York public school．
Rooftop gardens and green walls may require a bit more effort to grow and maintain．However，hard work always brings rewards，and with green spaces，the rewards are plentiful．
Due to the limited space in cities，rooftop gardens and green walls have emerged．（要點1）One benefit of adding green to rooftops and walls is to offer an agreeable surroundings．（要點2）Besides，shade can be created to make cities stay cooler longer，thus reducing the costs in energy．（要點3）What's more，green gardens in school bear educational value of children's exploring the world．（要點4）Though hard to maintain，green spaces in cities ensure abundant rewards．（要點5）
（71 words）．

Answer 1

分析 寫好這類作文要注意幾個步驟：1． 認真審題，找準提示語中的關(guān)鍵詞或句，確定中心思想．2． 依據(jù)關(guān)鍵句，草擬提綱，梳理文章的脈絡(luò)3． 準確定位人稱、時態(tài)．注意使用高級詞匯和高級句型使文章顯得更有檔次．4．最后還要認真查驗是否有漏寫情況，有無拼寫錯誤及標點誤用等
高分句型一：
Due to the limited space in cities，rooftop gardens and green walls have emerged
由于在城市有限的空間，屋頂?shù)幕▓@和綠色的墻壁已經(jīng)出現(xiàn)．
高分句型二：
What's more，green gardens in school bear educational value of children's exploring the world．
更重要的是，在兒童探索世界的學(xué)校承擔教育價值的綠色花園．

解答 Due to the limited space in cities，rooftop gardens and green walls have emerged（高分句型一）．（要點1）One benefit of adding green to rooftops and walls is to offer an agreeable surroundings．（要點2）Besides，shade can be created to make cities stay cooler longer，thus reducing the costs in energy．（要點3）What's more，green gardens in school bear educational value of children's exploring the world（高分句型二）．（要點4）Though hard to maintain，green spaces in cities ensure abundant rewards．（要點5）
   （71 words）

點評 開放性作文給出一定的寫作主題，并此為基礎(chǔ)進行思維和聯(lián)想，自由發(fā)揮．不僅考查學(xué)生在內(nèi)容、結(jié)構(gòu)安排、語言運用和組織方面的能力，而且對學(xué)生的想像力、發(fā)散思維、歸納判斷能力也有很高的要求．