在北宋以前,最先进的印刷术是( )
A:活字印刷术
B:雕版印刷术
C:蜡纸印刷术
D:胶版印刷术
材料一
材料二
一个挂钟正对着平面镜,在镜子里看到挂钟指示的时间是10时45分,如图,则挂钟实际指示的时间应是( )
参考词汇:Saturday, Sunday, morning, afternoon, evening…
do homework, watch TV, go hiking, play sports, go camping, ride a bike, take pictures, clean the room, wash the clothes …
Monday, June 6th
I was busy last weekend. On Saturday, I
材料一:某班开展了班级之星评选活动,以下是参选同学的竞选稿片段:
材料二:蓉蓉在自己的日记里记下了自己上学某一天的“所见”“所闻”;