- Where's your father?
- He Beijing. He there last month.
A:has gone to; went
B:has been to; went
C:has gone to; has gone
中国近代某思想家在评价近代一场战争时指出:“以寥寥数舰之舟师,区区数万人之众,一战而剪我最亲之藩属,再战而陪都动摇,三战而夺我最坚之海口,四战而威海之海军大替矣。” 此次战争结束后( )
A dictionary is ____ (expensive) than a story-book.
如图是家庭用电熨斗构件示意图,据图回答下列问题:
(1)电熨斗构件中,含有金属材料的是____ (填一种,下同);属于有机合成材料的是____ .
(2)电熨斗不用时,要即时断开电源,否则可能引发火灾,电熨斗通电产生热量属于____ (选填“物理”或“化学”)变化,使可燃物____ 而引发燃烧.
(3)比较铁与铜活动性的方法是____ .