设曲线y=ax^2+2x在点(1,a+2)处的切线与直线y=4x平行,则a=()
Whichoneisnotthefunctionsofthenonverbalcommunication;()
Shewastooshytospeak____.
Newsmediaareimportantinmodernsociety.Whyaretheysoimportant?Aretheirinfluencesgenerallypositiveornegative?
Youngpeoplewhocommitseriouscrimesshouldbepunishedinthesamewayasadults.Towhatextentdoyouagreeordisagree?
一个人的成长绝大部分取决于后天环境。