涉及北京机动车使用量增加这一问题，有的人认为应该限制使用。另一些人持相反意见。也许双方的观点都有一定道理，但是，无论车辆多少，必须对废气排放实行控制。

　　3. There is a general debate nowadays about the problem of itinerant workers . Those who object to the rising migrant population argue that increasing numbers lead to rising crime rates and harm social stability . They believe that strict limits should be placed on migrants entering China ' s cities . But people who favor the influx of the cheap labor force , on the other hand , maintain that migrants are needed to support the massive urban infrastructure construction program .

　　目前，针对流动工人的问题展开了普遍的争论。反对流动工人增加的人认为这会导致犯罪率升高，从而危害社会稳定。他们主张应该严格限制进入中国城市的流动工人。但是，另一方面，支持廉价劳动力流入的人主张，为了支持大规模的城市基础设施建设规划，流动人口是必需的。

　　4. It is widely acknowledged that extensive deforestation contributed to heavy summer flooding . Experts argue that China must introduce a massive afforestation program . But I doubt whether afforestation alone will solve the problem .

　　人们普遍认为过度砍伐造成了夏季特大洪水。专家认为中国必须推行大规模的植树造林计划。但我对仅仅植树造林就能解决问题表示怀疑。

　　5. Most people are of the opinion that wealth provides solutions to all problems . But in spite of the material benefits wealth provides , I believe one should abandon the pursuit of materialism and instead concentrate on the pursuit of happiness .

　　大多数人认为财富为所有问题提供解决的办法。但是，我认为，尽管财富提供物质上的利益，一个人应该放弃物质至上的追求，而是集中精力追求幸福。