阅读下面的文字，完成下列小题。

                                                                                    清晨我漫步在山坡谷地，

                                                                                    晨光宣泄着永恒的秘密，

                                                                                    山涧里流倘出一条小溪，

                                                                                    她在歌、在唤、在吐露心曲：

                                                                                    生活并非安逸，

                                                                                    它是思念和希冀。

                                                                                    死亡并非哀歌，

                                                                                    它是失望与憔悴。

                                                                                    智者不在言词，

                                                                                    其秘密在言词背后藏nì。

                                                                                    伟人不在高位，

                                                                                    不屑权位者才配享荣誉。

                                                                                   （纪伯伦《小溪，你说什么》节选）

在农田中一次施肥过多时，作物会出现萎蔫的想象，当情势比较严重时，解决的办法是（　　）

Mr. Zhang teaches           Chinese. We like            class very much.

函数f(x)=$\sqrt{x+3}$+$\frac{1}{lg\left(6-x\right)}$的定义域是（   ）

直接影响我国经济发展和人民生活水平提高的是（    ）