$f\left(x\right)=a{x}^3+3x^2+2$，若$f^{\text{'}}\left(-1\right)=4$，则a的值为（   ）

古人用稀释的尿液浸泡泥土．用泥封树枝，树枝会生根．主要因为尿液中含有（　　）

完形填空

    I like English very much. I think English is very important and 1. Here are my opinions of 2English well.

    I think there are many ways 3learn English. For example, asking the teacher 4 help is very helpful. One of my good 5said he had trouble 6English. His 7 English is very poor. So he reads aloud every morning. Now he can speak English very well. Watching English shows on TV can also be helpful. You can learn many words 8them. Remember "Where there is a 9, there is a way." Believe you can do it 10 .

入连云栈^①

清·沈廉

飞栈盘空乌路分，烟复雾树合氤氲。

入缘蚁垤^②纷相引，风递猿声断更闻。

百道争飞天外瀑，千峰乱插马头云^③。

身当绝境浑忘险，不觉频穿虎豹群。

【注释】①连云栈：栈道名。在陕西汉中地区，古为川陕之通道，即所谓“蜀道”。②蚁垤（dié）：蚂蚁洞口的小土堆。③马头云：云的一种。

①春节____    ②中国农历新年____

③吃月饼____  ④端午节____

⑤赛龙舟____  ⑥吃重阳糕____