阅读理解。

    Amy and Sarah are good friends. They are from America. They like winter in America because there are many activities in winter. They can make a snowman,go fishing and go skiing with many friends. There are two festivals (节目) in winter. They're Christmas Day and Thanksgiving. Amy and Sarah are very happy. But they're in Beijing now. They like winter in Beijing, too. Because It's beautiful. It's windy and cold. They're going to visit the Great Wall, so they're very happy.

硝化细菌通过化能合成作用形成有机物，需要下列哪种环境条件？（　　）

2016年3月16日，在全国人大表决通过国务院政府工作报告后，来自香港的人大代表在接受记者采访时表示：“十二五”期间，在中央的支持下，香港各方面发展显著；“十三五”期间香港将继发挥“一国两制”的独特优势，结合香港自身条件取得更大的发展。对此，下列理解正确的是（    ）