Jenny couldn't help her grandmother when she heard the song.
A:miss
B:missing
C:to miss
D:missed
书博会开幕式的背景墙上有孔子泰山等形象,若为背景墙选配孔子的两句名言,下列最合适的是①人无远虑,必有近忧 ②学而时习之,不亦说乎③己所不欲,勿施于人 ④有朋自远方来,不亦乐乎
词汇:
同素异形体 ____;氨 ____.铝 ____;合金 ____;氯气 ____;reducing agent ____;amphoteric ____;oxidation ____;Silicon ____;acid rain ____
若集合M={x|-2<x<3},N={y|y=x2+1,x∈R},则集合M∩N=( )