已知某厂产值的月平均增长率为P，则年平均增长率为(  )

给下列字各组两个词语。

走	____	____	过	____	____
说	____	____	跟	____	____
沙	____	____	点	____	____

 
22. —I think we have to solve _____ problem of air quality for the Great International Art Festival held in our city next year.
— Yes, and the government is trying to think of _____ way out and there is more than one 
solution

生物在合成下列各种物质时，均需要提供氮元素的是
①脂肪 ②核酸 ③核糖 ④ATP ⑤蛋白质 ⑥脂肪酶

某同学在微博中写道：“随着中考的临近，我心里越来越烦躁不安，彻夜难眠，我害怕考不好，对不起父母和老师……”下列描述符合该同学状态的是（   ）