英语语法分析

What does the author imply about some critics of bans and taxes concerning unhealthy drinks?

针对不健康饮料的禁令和税收的批评，作者暗示了什么？

Many cities with bans still allow shoppers to purchase paper bags, which are easily recycled but require more energy to produce and transport.

许多有禁令的城市仍然允许消费者购买纸袋。虽然纸袋很容易回收，但生产和运输需要更多的能源。

US President Bush will soon give Russia notice that the United States is withdrawing from the 1972 nucleartreaty that bans testing of missile defense systems.

美国总统布什将很快通知俄罗斯，美国将退出1972年禁止测试导弹防御系统的核条约。