The classic marathon no longer satisfies some people because______.
A. it does not provide enough challenge
B. it may be tough and dangerous
C. it involves too fierce a competition
D. it has attracted too many people
查看答案
子宫内膜不规则脱落
A. 月经周期正常，但经期延长
B. 月经间隔时间正常，经期流血时间长
C. 周期.经期.月经量都不正常
D. 突然大量出血，并发痛经
E. 月经周期无规律
商喜画虎得其勇猛之势。山水、人物、花木、翎毛全摹宋人笔意，无不臻妙，为明初人所重。()
What may be the best title for the passage？
A. Survival of Plants
B. Plant World
C. Talking Plants
D. Plant Bug Killer
【C7】
A. tragedy
B. comedy
C. play
D. drama
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