我国彻底废除存在两千多年封建剥削的土地所有制的标志是（ ）
A：中华人民共和国成立
B：1952年全国土地改革基本完成
C：国民经济全面恢复初步发展
D：抗美援朝取得伟大胜利
______ went hiking last weekend because of the bad weather.
下列有关生物学实验的叙述，正确的是（ ）
have, at, like, usually， watch, homework, after, play, come
I have a friend. His name is Li Daming. He often gets up ____ six o'clock in the morning. He ____ breakfast at seven. He goes to school five days a week. After school，he ____ plays games for half an hour. Look! What is he doing？He is ____ basketball. In the evening he does his ____ and he likes listening to music. He often ____TV for half an hour____ he finishes his homework. He goes to bed at ten o'clock. Do you ____ him?
1956年，中国可能出现的景象有（ ）
《周礼•春官•大宗伯》载：“以玉作六瑞，以等邦国：王执镇圭，公执桓圭，侯执信圭，伯执躬圭，子执谷璧，男执蒲璧。”这段材料本质上反映了西周时期（ ）
