A:多元文化的碰撞交融与文明高度发展
B:开放革新的时代
C:农耕文明的繁盛与近代前夜的危机
D:政权分立与民族汇聚
用所给单词填空
(1)Sometimes we ____ food at home. (2)I ____ drinking milk. (3)We often ____ CCTV news at 7:00 in the evening. (4)I ____ the Internet once a day.(5)The results for “read English books”____ fun.(6)How often do you ____ to the English corner? (7)Everyone will____ you if you need any help.(8)The sun ____ once a day. (9)Walking can ____ you in good health.(10)I____ nine hours every night.
科学家发现由C60制取的化合物M有抑制艾滋病毒的作用,下列叙述错误的是( )
下列叙述正确的是()
某超市将甲、乙两种商品进价各自提价30%后,又同时降价30元出售,售出后两种商品的总利润为60元,则甲、乙两种商品进价之和为____ 元.