Different cultures welcome the new year ______.
A. by hanging straw rope across the front of their houses
B. in different ways
C. by having a good laugh
D. in the same way
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核小体是()
A. 染色质的一种基本结构
B. 原生动物空泡状核中着色深的小体
C. 染色体畸变时无着丝粒的片断
D. 真核细胞中可用苏木精染色并主要由蛋白质和RNA组成的小体
If you see someone wearing a white carnation on Mother's Day, it means ______.
A. his mother is ill
B. his mother passed away
C. his mother is happy
D. his mother is living
"The Lure of the Spirit; The Flesh in Pursuit" is the title of one chapter in Dreiser' s novel______.
An American Tragedy
B. Sister Carrie
C. Dreiser Looks at Russia
D. Jannie Gerhardt
It wasn't always January 1 that marked the new year until ______.
A. everyone greeted each other with "happy new year"
B. the Nile River flooded
C. the Roman Emperor Julius Caesar established his own calendar in 46 BC
D. the next farming cycle kicked off