（1）化简：sin230°+cos245°+2sin60°-tan45°；（2）

男，6个月，发作性抽搐2个月，表现为点头,弯腰，双手前伸，每次发作10余下，一天发作4～5次。出生时有窒息史，其EEG最可能表现为

A．高峰节律紊乱
B．1.5～2.5Hz棘慢波
C．全导同步3Hz棘慢波
D．C₃/T₃棘慢波，睡眠中增多
E．爆发抑制

According to historical records，the first (1) Olympic Games can be traced back to 776 BC.They (2) dedicated to the Olympian gods and were staged on the (3) plains of Olympia.They continued for nearly 12 centuries， (4) Emperor Theodosius decreed in 393 A.D.that aU such"pagan cults" (5) banned.
The oldest myth which concerns the beginning of the (6) Games is that of Idaios Daktylos Herakles.According to other (7) ，Zeus，the father of humanity，fought and defeated Cronus in a (8) for the throne of the gods.Finally，the well-known (9) Herakles is mentioned who staged games in Olympia in honour (10) Zeus,because the latter had helped him conquer Elis when (11) went to war against Augeas.
Through the 12 centuries of (12) Olympic Games，many wonderful athletes competed in the stadium and (13) hippodrome of ancient Olympia’s sacred area，moving the crowds with (14) great achievements.Although mortal，their Olympic victories immortalised them.Of (15) best athletes who left their mark on the sacred vallev (16) Olympia，some surpassed all limits and became legends by winning (17) successive Olympic Games and remaining at the forefront of their (18) for more than a decade.
The ancient Olympic Games were (19) a one.day event until 684 BC.when they were extended (20) three days.In the 5th century B.C.，the Games were extended again to cover five days.

简述资本积累的实质和后果。

A和B为邻居GK，B和C是邻居GK，那么A和C是：（）

A.邻居GK

B.不是邻居GK，且A和C不能请求对方解析地址

C.不是邻居GK，但A和C能请求对方解析地址

D.不能确定

简述下水道损坏的几种情况。