ARGUMENT 为了减少accidents，减少出租mopeds

语文部分有一篇阅读是三十六套最后两个section中的一个，讲什么clouds，

As of the late 1980’s. neither theorists nor large-scale computer climate models could accurately predict whether cloud systems would help or hurt a warming globe. Some studies suggested that a four percent increase in stratocumulus clouds over the ocean could compensate for a doubling in atmospheric carbon dioxide, preventing a potentially disastrous planetwide temperature increase. On the other hand, an increase in cirrus clouds could increase global warming. That clouds represented the weakest element in climate models was illustrated by a study of fourteen such models.Comparing climate forecasts for a world with double the current amount of carbon dioxide, researchers found that the models agreed quite well if clouds were not included.But when clouds were incorporated, a wide range of forecasts was produced.

就是这篇，但是题目不一样，题目忘了。。。

数学有一道题目我不怎么会就是说一个教授去了十天教室，A去了8天，B去了7天，C去了6天，三个人同时去的是一天，问你至少两人一起去的有多少天?大概就是这个意思，那几个ABC的天数不是很清楚了。