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It is as if a single unimportant event set up a chain of reactions. as if 引导的是个完整的能独立表达意思的句子，为何还要用it is 弄成个表语从句。
网校学员海蓝h**在学习新概念英语3、4册连读【随到随学班】时提出了此问题，已有1人帮助了TA。
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啦啦teacher
同学你好，该知识点来自沪江网校《新概念英语3、4册连读【随到随学班】》的课程，想要更系统的学习，欢迎进入课程学习。不仅可以和更多的同学一起学习，而且还有老师、助教随时的学习指导和知识点解答哦。
y'=(2ax+b)*e^2x+(2ax^2+2bx)*e^2x=[2ax^2+(2a+2b)x+b]*e^2x然后再求二阶导就可以的
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新概念英语3、4册连读【随到随学班】
已有60人在本课程中发现了453个知识
已有416个知识得到了老师的回复
本课程热门知识点
- 第四册26课第三段第一长句句子结构怎么分析，看不懂
- Camels are often referred to as ‘boat of desert’ for the simple reason that they are critical for traveller.老师看下 这个句子有毛病吗？
- Eating potatos for the simple reason that I am fond of it.有问题吗？
- bottomless有贬义色彩嘛？如果没有那说人毫无底线用什么词
- It suddenly dawned on me that the job does not proper for me.
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It is all too easy to blame children when something does go wrong.
It is all too easy to give up dream of us quickly when some of difficulties occur. - It suddenly dawned on me that the phone has been left behind home when I am readying to telephone my girlfriend.
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They know each other so well that
his didea can't fail to her.为什么用to get aross而不填to understand? -
to encounter superstar in the street rarely surprises us any more. the idea that superstar is different general folk is mistaken.
可以用 be at odds with吗 - 新四30课 L10-11 and the existence...magnitude 这句话怎么翻译，怎么课后译文就能翻出来“差异”呢？