材料一：“十一五”期间，我国国民经济持续发展，科学迅猛发展，人民生活水平稳步提高，国内生产总值超过日本，成为仅次于美国的第二大经济体，国际地位和影响力显著提高。
材料二：“入园难”“上学难”“就医难”“住房难”、人民收入增长较慢等一系列问题还摆在我们面前，要想让人民群众充分享受改革开放的成果，获得更有尊严，还需要我们付出艰辛的努力。
阅读材料，回答下列问题。

【珍惜宝贵权利 履行应尽义务】我国是人民当家作主的国家，每个公民都享有广泛的权利，我们青少年享有的权利由法律确认，受法律特殊保护，行使权利也受法律约束，不能滥用权利。具有正确的权利和义务观是现代人应具备的素质，在享有权利的同时必须自觉履行义务。可也有同学认为“享有权利是快乐的，履行义务是痛苦的”。

读下面一段短文，用括号内所给单词的适当形式填空。
American summers are filled with outdoor picnics, baseball games and swimming pools. Summer in America is a time____ (enjoy) the outdoors, no matter how hot it might be. Let's take a look at some of the popular drinks.
Lemonade is ____  (common)of all American summer drinks. It____ (make)by mixing lemon juice, water and sugar. It is usually served very cold, with ice. Ice tea is another  popular summer drink in America. Ice tea is usually served in a tall glass of ice. Many Americans____  (choose) to add sugar to sweeten the drink. This drink is often drunk in the afternoon while relaxing in the shade. Ice tea is now also sold by the bottle , at almost any store in America.  
The Slurpee, a famous American drink in recent years, is a great way to cool off in the summer heat. It is a mix of ice, sugar and fruit juices. However, the drink is mostly made of ice. They can ____  (buy) at most small convenient stores. Slurpees are popular with young Americans. Milkshakes have a long history in America . It is made of a mix of ice cream , milk and flavoring.