写出带有下列偏旁的字。

舟——____——____

木——____——____

阅读理解

    Is there link between humans and climate change or not? This question was first studied in the early 1900s. Since then, many scientists have thought that our actions do make a difference. In 1997, the Kyoto Protocol explained our role in the Earth's changing atmosphere and set international limits for gas emissions(排放) from 2008 to 2012. Some countries have decided to continue these reductions until 2020. More recently, the Paris Agreement, stuck by nearly 200 countries, also aims to limit global warming. But just now how much warmer it will get depends on how deeply countries cut carbon emissions.

一个质量为2kg的物体静止在光滑的平面上，在6N的水平恒力F的作用下开始运动，求：

由于国家出台对房屋的限购令，我省某地的房屋价格原价为8400元/米²，通过连续两次降价a%后，售价变为6000元/米²，下列方程中正确的是（　　）