【判断题】幼儿一次游戏持续的时间伴随着幼儿年龄的增长而逐渐延长,同时幼儿游戏的坚持性也在逐渐增强。
【单选题】The heir to the English throne is named the ______, which was initiated by Edward I in 1301.
D.
Prince of Northern Ireland
【单选题】The exhibition will _____to those who love painting.
【单选题】下列关于螯合物的叙述中,不正确的是 )
B.
螯合物通常比具有相同配位原子的非螯合配合物稳定得多
C.
形成螯环的的数目越大,螯合物的稳定性不一定越好
D.
起螯合作用的配位体一般为多齿配位体,称螯合剂