四级作文素材

The challenges of living in a big city

Solution to energy shortage

• It is self-evident that 显而易见的
• Needless to say 自不用说
• utilize renewable energy
• closely related to
• manufacturing 制造业的
• manufactory 工厂
• industry 产业
• manufacturing industry 制造业

How to promote public transportation

• opt for 选择
• is environmentally-friendlly compared to
• guarantee the frequency of
• infrastructure of public transportation
  • 基础建设/设施
• shabby 破旧的
• in comparison with 与，，比较
• in comparison with，when eating out，you…

在家吃还是在外吃

The benifit of eating at home

• with the rise of
• catering business 餐饮业
• ingredient 原料
• when eating out 在外就餐时
• expired 过期的
• semen 精液（发音同水泥）
• cement family relationship 巩固
• object to eating out every once in a while
  • 偶尔
• people have different views on

外卖

The hazards of take-out