如图所示，AB是⊙O的直径，AD＝DE，AE与BD交于点C，则图中与∠BCE相等的角有（   ）　　

同一地区，为使画出的地理事物内容最详细，应采用下列比例尺中的（    ）

    I'm Amy Black．I have never seen sharks in the____．But as a(n)____，I have seen sharks in an aquarium(水族馆)．

    ____，there are between 200and 250 kinds of sharks of different sizes．Sharks are much____than other fishes．The largest carl be as long as 15____ largest shark____about 3，200 kilos．Usually sharks don't attack(攻击)people．Sometimes they attack people____themselves．One of____sharks is the Great White Shark．They attacked a lot of people on the beaches of America．

阅读下列材料

材料一：有个地方叫克里特，在深绿色的海中央。那里美丽又富裕，四面是汪洋。那里居民稠密，有数不清的数量。九十个城市林立在岛上。

                                                                                                                                                                              ——《荷马史诗》

材料二：古代的传说，如果用现代严密的科学方法去检验，大多平凡地消失了。但是奇怪的是：这种梦一样的传说，往往是一个半醒半睡的梦，预示着真实。

                                                                                                                                                                          ——英国学者赫胥黎

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