When I as well as my cousins __________ as a volunteer in Beijing, I saw the Water Cube twice.
A:were treated
B:treated
C:was served
D:served
***出席中国——拉丁美洲文明互鉴系列活动时表示,有五千年悠久历史的中华文化同古老璀璨的( )有很多理念相通,器物相似。
明朝皇权空前强化的重要表现是( )
根据课文《奇妙的克隆》回答
文中“一切准备”,包括哪些内容?(不超过40个字)?
“x<2”是“x<3”的( ).