已知(x+y﹣3)2+|y+z﹣5|+(z+x﹣4)4=0,则x+y+z的值是 _________.
6
下列叙述正确的是( )
A.离子晶体中只存在离子键
B.原子晶体中只存在非极性共价键
C.冰是水分子间主要通过氢键作用有规则排列成的分子晶体
D.液态氯化钠和铜导线的导电原理是相同的
—Have you________ Betty yet?
—Not really.She won’t forgive me for having told her lies.
A.put up with
B.come up with
C.made up with
D.kept up with