—The light in his room is still on.Do you know________?
—In order to prepare for the coming exam.
A:if he works hard
B:why he stays up so late
C:why is he so busy
D:when he will stop working
“大江东去,浪淘尽,千古风流人物。故垒西边,人道是,三国周郎赤壁。乱石穿空,惊涛拍岸,卷起千堆雪。江山如画,一时多少豪杰”一词的创作风格是( )
“辉煌属于希腊,宏伟属于罗马”这句西方谚语中的“罗马的宏伟”得益于( )
人体的支持和运功是在神经系统的支配下,依靠运动系统来完成的,人体的运动系统由____、____、____组成.