【答案解析】在外语习得中，听、说、读、写四种语言技能之间存在着某种平衡。比如，如果某语言学习者词汇量为1000个，那么在阅读中他大概可以使用其中的900个，听力中使用500个，写作中使用300个，口语中使用200个，也就是说，平衡比例为10∶9∶5∶3∶2。这是一种动态平衡。一方面，不同语言学习者所具备的四种技能的比例会有差异。另一方面，我们可以通过加强某一种技能的学习，让其比例上升，但比例中的先后顺序是很难改变的。 [解析]
In foreign language acquisition, there is some kind of balance of proportions among 4 language skills, namely, reading, listening, writing, and speaking. For instance, if a learner has a vocabulary of 1,000, he might be able to use 900 in his reading, 500 in his listening, 300 in his writing and 200 in his speaking. That is to say, the balance is 10: 9: 5: 3: 2. This is a dynamic balance. On the one hand, for different learners, the proportion of each of 4 language skills might be different, and on the other hand, one learner might be able to improve one particular skill which leads to higher proportion for it, but still he can hardly change the order of there proportions.

【答案解析】美国在线(AOL)与Google宣布将进一步加强合作。按照计划，Google将以10亿美元收购 AOL 5%的股份。Google一直为AOL提供搜索技术，双方伙伴关系所带来的收入约占 Google营收10%。协议的达成标志着Google此次压倒了其竞争对手微软取得胜利。微软一直想收购AOL互联网搜索业务的一部分。目前，就网上业务而言，微软远远落后于Google和雅虎，分析人士认为，在今后5～10年内，该领域内的竞争必将更为激烈。 [解析]
America Online and Google have announced an agreement to further strengthen their cooperation.
Under the plan, Google would buy a 5% stake of AOL for one billion dollars. Google had been providing AOL with search technology already, revenues from that partnership account for some 10% of Google"s business. With this deal, Google scores a victory against its rival Microsoft. Microsoft has also been trying to obtain a piece of America Online in the Internet search business. Right now, for online business, Microsoft is well lagging behind Google and Yahoo!, and analysts believe that competition in this field is bound to be more heated in the next five to ten years.